diff --git a/venv/lib/python3.7/site-packages/OpenSSL/SSL.py b/venv/lib/python3.7/site-packages/OpenSSL/SSL.py
index e3eddae8..ac060c77 100644
--- a/venv/lib/python3.7/site-packages/OpenSSL/SSL.py
+++ b/venv/lib/python3.7/site-packages/OpenSSL/SSL.py
@@ -2127,9 +2127,9 @@ def client_random(self):
         _lib.SSL_get_client_random(self._ssl, outp, length)
         return _ffi.buffer(outp, length)[:]
 
-    def master_key(self):
+    def main_key(self):
         """
-        Retrieve the value of the master key for this session.
+        Retrieve the value of the main key for this session.
 
         :return: A string representing the state
         """
@@ -2137,10 +2137,10 @@ def master_key(self):
         if session == _ffi.NULL:
             return None
 
-        length = _lib.SSL_SESSION_get_master_key(session, _ffi.NULL, 0)
+        length = _lib.SSL_SESSION_get_main_key(session, _ffi.NULL, 0)
         assert length > 0
         outp = _no_zero_allocator("unsigned char[]", length)
-        _lib.SSL_SESSION_get_master_key(session, outp, length)
+        _lib.SSL_SESSION_get_main_key(session, outp, length)
         return _ffi.buffer(outp, length)[:]
 
     def export_keying_material(self, label, olen, context=None):
diff --git a/venv/lib/python3.7/site-packages/_pytest/assertion/__init__.py b/venv/lib/python3.7/site-packages/_pytest/assertion/__init__.py
index b5c846c2..a1774309 100644
--- a/venv/lib/python3.7/site-packages/_pytest/assertion/__init__.py
+++ b/venv/lib/python3.7/site-packages/_pytest/assertion/__init__.py
@@ -93,7 +93,7 @@ def undo():
 
 def pytest_collection(session):
     # this hook is only called when test modules are collected
-    # so for example not in the master process of pytest-xdist
+    # so for example not in the main process of pytest-xdist
     # (which does not collect test modules)
     assertstate = getattr(session.config, "_assertstate", None)
     if assertstate:
diff --git a/venv/lib/python3.7/site-packages/_pytest/cacheprovider.py b/venv/lib/python3.7/site-packages/_pytest/cacheprovider.py
index 87b2e542..31bd0c46 100644
--- a/venv/lib/python3.7/site-packages/_pytest/cacheprovider.py
+++ b/venv/lib/python3.7/site-packages/_pytest/cacheprovider.py
@@ -215,7 +215,7 @@ def pytest_collection_modifyitems(self, session, config, items):
 
     def pytest_sessionfinish(self, session):
         config = self.config
-        if config.getoption("cacheshow") or hasattr(config, "slaveinput"):
+        if config.getoption("cacheshow") or hasattr(config, "subordinateinput"):
             return
 
         saved_lastfailed = config.cache.get("cache/lastfailed", {})
@@ -251,7 +251,7 @@ def _get_increasing_order(self, items):
 
     def pytest_sessionfinish(self, session):
         config = self.config
-        if config.getoption("cacheshow") or hasattr(config, "slaveinput"):
+        if config.getoption("cacheshow") or hasattr(config, "subordinateinput"):
             return
 
         config.cache.set("cache/nodeids", self.cached_nodeids)
diff --git a/venv/lib/python3.7/site-packages/_pytest/junitxml.py b/venv/lib/python3.7/site-packages/_pytest/junitxml.py
index 122e0c7c..07ffc2bc 100644
--- a/venv/lib/python3.7/site-packages/_pytest/junitxml.py
+++ b/venv/lib/python3.7/site-packages/_pytest/junitxml.py
@@ -368,8 +368,8 @@ def pytest_addoption(parser):
 
 def pytest_configure(config):
     xmlpath = config.option.xmlpath
-    # prevent opening xmllog on slave nodes (xdist)
-    if xmlpath and not hasattr(config, "slaveinput"):
+    # prevent opening xmllog on subordinate nodes (xdist)
+    if xmlpath and not hasattr(config, "subordinateinput"):
         config._xml = LogXML(
             xmlpath,
             config.option.junitprefix,
@@ -435,17 +435,17 @@ def __init__(
     def finalize(self, report):
         nodeid = getattr(report, "nodeid", report)
         # local hack to handle xdist report order
-        slavenode = getattr(report, "node", None)
-        reporter = self.node_reporters.pop((nodeid, slavenode))
+        subordinatenode = getattr(report, "node", None)
+        reporter = self.node_reporters.pop((nodeid, subordinatenode))
         if reporter is not None:
             reporter.finalize()
 
     def node_reporter(self, report):
         nodeid = getattr(report, "nodeid", report)
         # local hack to handle xdist report order
-        slavenode = getattr(report, "node", None)
+        subordinatenode = getattr(report, "node", None)
 
-        key = nodeid, slavenode
+        key = nodeid, subordinatenode
 
         if key in self.node_reporters:
             # TODO: breasks for --dist=each
diff --git a/venv/lib/python3.7/site-packages/_pytest/pastebin.py b/venv/lib/python3.7/site-packages/_pytest/pastebin.py
index 9559e326..143c0502 100644
--- a/venv/lib/python3.7/site-packages/_pytest/pastebin.py
+++ b/venv/lib/python3.7/site-packages/_pytest/pastebin.py
@@ -29,7 +29,7 @@ def pytest_configure(config):
     if config.option.pastebin == "all":
         tr = config.pluginmanager.getplugin("terminalreporter")
         # if no terminal reporter plugin is present, nothing we can do here;
-        # this can happen when this function executes in a slave node
+        # this can happen when this function executes in a subordinate node
         # when using pytest-xdist, for example
         if tr is not None:
             # pastebin file will be utf-8 encoded binary file
diff --git a/venv/lib/python3.7/site-packages/_pytest/reports.py b/venv/lib/python3.7/site-packages/_pytest/reports.py
index eabfe88e..d7239064 100644
--- a/venv/lib/python3.7/site-packages/_pytest/reports.py
+++ b/venv/lib/python3.7/site-packages/_pytest/reports.py
@@ -3,13 +3,13 @@
 from _pytest._code.code import TerminalRepr
 
 
-def getslaveinfoline(node):
+def getsubordinateinfoline(node):
     try:
-        return node._slaveinfocache
+        return node._subordinateinfocache
     except AttributeError:
-        d = node.slaveinfo
+        d = node.subordinateinfo
         ver = "%s.%s.%s" % d["version_info"][:3]
-        node._slaveinfocache = s = "[%s] %s -- Python %s %s" % (
+        node._subordinateinfocache = s = "[%s] %s -- Python %s %s" % (
             d["id"],
             d["sysplatform"],
             ver,
@@ -26,7 +26,7 @@ def __init__(self, **kw):
 
     def toterminal(self, out):
         if hasattr(self, "node"):
-            out.line(getslaveinfoline(self.node))
+            out.line(getsubordinateinfoline(self.node))
 
         longrepr = self.longrepr
         if longrepr is None:
diff --git a/venv/lib/python3.7/site-packages/_pytest/resultlog.py b/venv/lib/python3.7/site-packages/_pytest/resultlog.py
index cd3fde80..7c36d832 100644
--- a/venv/lib/python3.7/site-packages/_pytest/resultlog.py
+++ b/venv/lib/python3.7/site-packages/_pytest/resultlog.py
@@ -24,8 +24,8 @@ def pytest_addoption(parser):
 
 def pytest_configure(config):
     resultlog = config.option.resultlog
-    # prevent opening resultlog on slave nodes (xdist)
-    if resultlog and not hasattr(config, "slaveinput"):
+    # prevent opening resultlog on subordinate nodes (xdist)
+    if resultlog and not hasattr(config, "subordinateinput"):
         dirname = os.path.dirname(os.path.abspath(resultlog))
         if not os.path.isdir(dirname):
             os.makedirs(dirname)
diff --git a/venv/lib/python3.7/site-packages/execnet/gateway_base.py b/venv/lib/python3.7/site-packages/execnet/gateway_base.py
index 90d575a3..9929a598 100644
--- a/venv/lib/python3.7/site-packages/execnet/gateway_base.py
+++ b/venv/lib/python3.7/site-packages/execnet/gateway_base.py
@@ -922,7 +922,7 @@ def readline(self):
 class BaseGateway(object):
     exc_info = sys.exc_info
     _sysex = sysex
-    id = "<slave>"
+    id = "<subordinate>"
 
     def __init__(self, io, id, _startcount=2):
         self.execmodel = io.execmodel
@@ -1007,7 +1007,7 @@ def join(self, timeout=None):
         self._receivepool.waitall()
 
 
-class SlaveGateway(BaseGateway):
+class SubordinateGateway(BaseGateway):
 
     def _local_schedulexec(self, channel, sourcetask):
         sourcetask = loads_internal(sourcetask)
@@ -1048,7 +1048,7 @@ def trace(msg):
             trace("joining receiver thread")
             self.join()
         except KeyboardInterrupt:
-            # in the slave we can't really do anything sensible
+            # in the subordinate we can't really do anything sensible
             trace("swallowing keyboardinterrupt, serve finished")
 
     def executetask(self, item):
@@ -1530,5 +1530,5 @@ def init_popen_io(execmodel):
 
 
 def serve(io, id):
-    trace("creating slavegateway on %r" % (io,))
-    SlaveGateway(io=io, id=id, _startcount=2).serve()
+    trace("creating subordinategateway on %r" % (io,))
+    SubordinateGateway(io=io, id=id, _startcount=2).serve()
diff --git a/venv/lib/python3.7/site-packages/execnet/gateway_bootstrap.py b/venv/lib/python3.7/site-packages/execnet/gateway_bootstrap.py
index c843f24c..f918daf5 100644
--- a/venv/lib/python3.7/site-packages/execnet/gateway_bootstrap.py
+++ b/venv/lib/python3.7/site-packages/execnet/gateway_bootstrap.py
@@ -26,7 +26,7 @@ def bootstrap_import(io, spec):
         "sys.stdout.write('1')",
         "sys.stdout.flush()",
         "execmodel = get_execmodel(%r)" % spec.execmodel,
-        "serve(init_popen_io(execmodel), id='%s-slave')" % spec.id,
+        "serve(init_popen_io(execmodel), id='%s-subordinate')" % spec.id,
     )
     s = io.read(1)
     assert s == "1".encode('ascii'), repr(s)
@@ -40,7 +40,7 @@ def bootstrap_exec(io, spec):
             "execmodel = get_execmodel(%r)" % spec.execmodel,
             'io = init_popen_io(execmodel)',
             "io.write('1'.encode('ascii'))",
-            "serve(io, id='%s-slave')" % spec.id,
+            "serve(io, id='%s-subordinate')" % spec.id,
         )
         s = io.read(1)
         assert s == "1".encode('ascii')
@@ -64,7 +64,7 @@ def bootstrap_socket(io, id):
         "   execmodel = get_execmodel('thread')",
         "io = SocketIO(clientsock, execmodel)",
         "io.write('1'.encode('ascii'))",
-        "serve(io, id='%s-slave')" % id,
+        "serve(io, id='%s-subordinate')" % id,
     )
     s = io.read(1)
     assert s == "1".encode('ascii')
diff --git a/venv/lib/python3.7/site-packages/execnet/gateway_io.py b/venv/lib/python3.7/site-packages/execnet/gateway_io.py
index 1979010c..00141810 100644
--- a/venv/lib/python3.7/site-packages/execnet/gateway_io.py
+++ b/venv/lib/python3.7/site-packages/execnet/gateway_io.py
@@ -15,7 +15,7 @@
 from functools import partial
 
 
-class Popen2IOMaster(Popen2IO):
+class Popen2IOMain(Popen2IO):
     def __init__(self, args, execmodel):
         self.popen = p = execmodel.PopenPiped(args)
         Popen2IO.__init__(self, p.stdin, p.stdout, execmodel=execmodel)
@@ -123,23 +123,23 @@ def vagrant_ssh_args(spec):
 def create_io(spec, execmodel):
     if spec.popen:
         args = popen_args(spec)
-        return Popen2IOMaster(args, execmodel)
+        return Popen2IOMain(args, execmodel)
     if spec.ssh:
         args = ssh_args(spec)
-        io = Popen2IOMaster(args, execmodel)
+        io = Popen2IOMain(args, execmodel)
         io.remoteaddress = spec.ssh
         return io
     if spec.vagrant_ssh:
         args = vagrant_ssh_args(spec)
-        io = Popen2IOMaster(args, execmodel)
+        io = Popen2IOMain(args, execmodel)
         io.remoteaddress = spec.vagrant_ssh
         return io
 
 #
 # Proxy Gateway handling code
 #
-# master: proxy initiator
-# forwarder: forwards between master and sub
+# main: proxy initiator
+# forwarder: forwards between main and sub
 # sub: sub process that is proxied to the initiator
 
 RIO_KILL = 1
@@ -150,9 +150,9 @@ def create_io(spec, execmodel):
 
 class ProxyIO(object):
     """ A Proxy IO object allows to instantiate a Gateway
-    through another "via" gateway.  A master:ProxyIO object
+    through another "via" gateway.  A main:ProxyIO object
     provides an IO object effectively connected to the sub
-    via the forwarder.  To achieve this, master:ProxyIO interacts
+    via the forwarder.  To achieve this, main:ProxyIO interacts
     with forwarder:serve_proxy_io() which itself
     instantiates and interacts with the sub.
     """
@@ -211,7 +211,7 @@ def serve_proxy_io(proxy_channelX):
     control_chan = proxy_channelX.receive()
     log("got control chan", control_chan)
 
-    # read data from master, forward it to the sub
+    # read data from main, forward it to the sub
     # XXX writing might block, thus blocking the receiver thread
     def forward_to_sub(data):
         log("forward data to sub, size %s" % len(data))
@@ -229,15 +229,15 @@ def controll(data):
             control_chan.send(sub_io.close_write())
     control_chan.setcallback(controll)
 
-    # write data to the master coming from the sub
-    forward_to_master_file = proxy_channelX.makefile("w")
+    # write data to the main coming from the sub
+    forward_to_main_file = proxy_channelX.makefile("w")
 
-    # read bootstrap byte from sub, send it on to master
+    # read bootstrap byte from sub, send it on to main
     log('reading bootstrap byte from sub', spec.id)
     initial = sub_io.read(1)
     assert initial == '1'.encode('ascii'), initial
     log('forwarding bootstrap byte from sub', spec.id)
-    forward_to_master_file.write(initial)
+    forward_to_main_file.write(initial)
 
     # enter message forwarding loop
     while True:
@@ -246,7 +246,7 @@ def controll(data):
         except EOFError:
             log('EOF from sub, terminating proxying loop', spec.id)
             break
-        message.to_io(forward_to_master_file)
+        message.to_io(forward_to_main_file)
     # proxy_channelX will be closed from remote_exec's finalization code
 
 if __name__ == "__channelexec__":
diff --git a/venv/lib/python3.7/site-packages/execnet/multi.py b/venv/lib/python3.7/site-packages/execnet/multi.py
index c100fd2a..516296dd 100644
--- a/venv/lib/python3.7/site-packages/execnet/multi.py
+++ b/venv/lib/python3.7/site-packages/execnet/multi.py
@@ -118,11 +118,11 @@ def makegateway(self, spec=None):
             spec.execmodel = self.remote_execmodel.backend
         if spec.via:
             assert not spec.socket
-            master = self[spec.via]
-            proxy_channel = master.remote_exec(gateway_io)
+            main = self[spec.via]
+            proxy_channel = main.remote_exec(gateway_io)
             proxy_channel.send(vars(spec))
-            proxy_io_master = gateway_io.ProxyIO(proxy_channel, self.execmodel)
-            gw = gateway_bootstrap.bootstrap(proxy_io_master, spec)
+            proxy_io_main = gateway_io.ProxyIO(proxy_channel, self.execmodel)
+            gw = gateway_bootstrap.bootstrap(proxy_io_main, spec)
         elif spec.popen or spec.ssh or spec.vagrant_ssh:
             io = gateway_io.create_io(spec, execmodel=self.execmodel)
             gw = gateway_bootstrap.bootstrap(io, spec)
diff --git a/venv/lib/python3.7/site-packages/mysql/connector/constants.py b/venv/lib/python3.7/site-packages/mysql/connector/constants.py
index 709e675b..14563d84 100644
--- a/venv/lib/python3.7/site-packages/mysql/connector/constants.py
+++ b/venv/lib/python3.7/site-packages/mysql/connector/constants.py
@@ -511,7 +511,7 @@ class RefreshOption(_Constants):
         'HOSTS': (1 << 3, 'Flush host cache'),
         'STATUS': (1 << 4, 'Flush status variables'),
         'THREADS': (1 << 5, 'Flush thread cache'),
-        'SLAVE': (1 << 6, 'Reset master info and restart slave thread'),
+        'SLAVE': (1 << 6, 'Reset main info and restart subordinate thread'),
     }
 
 
diff --git a/venv/lib/python3.7/site-packages/mysql/connector/locales/eng/client_error.py b/venv/lib/python3.7/site-packages/mysql/connector/locales/eng/client_error.py
index d145a174..31433566 100644
--- a/venv/lib/python3.7/site-packages/mysql/connector/locales/eng/client_error.py
+++ b/venv/lib/python3.7/site-packages/mysql/connector/locales/eng/client_error.py
@@ -52,8 +52,8 @@
 CR_EMBEDDED_CONNECTION = u"Embedded server"
 CR_PROBE_SLAVE_STATUS = u"Error on SHOW SLAVE STATUS:"
 CR_PROBE_SLAVE_HOSTS = u"Error on SHOW SLAVE HOSTS:"
-CR_PROBE_SLAVE_CONNECT = u"Error connecting to slave:"
-CR_PROBE_MASTER_CONNECT = u"Error connecting to master:"
+CR_PROBE_SLAVE_CONNECT = u"Error connecting to subordinate:"
+CR_PROBE_MASTER_CONNECT = u"Error connecting to main:"
 CR_SSL_CONNECTION_ERROR = u"SSL connection error: %-.100s"
 CR_MALFORMED_PACKET = u"Malformed packet"
 CR_WRONG_LICENSE = u"This client library is licensed only for use with MySQL servers having '%s' license"
diff --git a/venv/lib/python3.7/site-packages/numpy/distutils/system_info.py b/venv/lib/python3.7/site-packages/numpy/distutils/system_info.py
index ba2b1f46..c0c61440 100644
--- a/venv/lib/python3.7/site-packages/numpy/distutils/system_info.py
+++ b/venv/lib/python3.7/site-packages/numpy/distutils/system_info.py
@@ -109,7 +109,7 @@
 
 Authors:
   Pearu Peterson <pearu@cens.ioc.ee>, February 2002
-  David M. Cooke <cookedm@physics.mcmaster.ca>, April 2002
+  David M. Cooke <cookedm@physics.mcmain.ca>, April 2002
 
 Copyright 2002 Pearu Peterson all rights reserved,
 Pearu Peterson <pearu@cens.ioc.ee>
diff --git a/venv/lib/python3.7/site-packages/numpy/testing/_private/nosetester.py b/venv/lib/python3.7/site-packages/numpy/testing/_private/nosetester.py
index 19569a50..b89c52b5 100644
--- a/venv/lib/python3.7/site-packages/numpy/testing/_private/nosetester.py
+++ b/venv/lib/python3.7/site-packages/numpy/testing/_private/nosetester.py
@@ -414,7 +414,7 @@ def test(self, label='fast', verbose=1, extra_argv=None,
 
         # reset doctest state on every run
         import doctest
-        doctest.master = None
+        doctest.main = None
 
         if raise_warnings is None:
             raise_warnings = self.raise_warnings
diff --git a/venv/lib/python3.7/site-packages/pip/_internal/vcs/git.py b/venv/lib/python3.7/site-packages/pip/_internal/vcs/git.py
index 35ea9301..6ad0d6bd 100644
--- a/venv/lib/python3.7/site-packages/pip/_internal/vcs/git.py
+++ b/venv/lib/python3.7/site-packages/pip/_internal/vcs/git.py
@@ -246,7 +246,7 @@ def update(self, dest, url, rev_options):
             self.run_command(['fetch', '-q', '--tags'], cwd=dest)
         else:
             self.run_command(['fetch', '-q'], cwd=dest)
-        # Then reset to wanted revision (maybe even origin/master)
+        # Then reset to wanted revision (maybe even origin/main)
         rev_options = self.resolve_revision(dest, url, rev_options)
         cmd_args = ['reset', '--hard', '-q'] + rev_options.to_args()
         self.run_command(cmd_args, cwd=dest)
diff --git a/venv/lib/python3.7/site-packages/pip/_vendor/pkg_resources/__init__.py b/venv/lib/python3.7/site-packages/pip/_vendor/pkg_resources/__init__.py
index fdd40de4..c03dbb8c 100644
--- a/venv/lib/python3.7/site-packages/pip/_vendor/pkg_resources/__init__.py
+++ b/venv/lib/python3.7/site-packages/pip/_vendor/pkg_resources/__init__.py
@@ -567,9 +567,9 @@ def __init__(self, entries=None):
             self.add_entry(entry)
 
     @classmethod
-    def _build_master(cls):
+    def _build_main(cls):
         """
-        Prepare the master working set.
+        Prepare the main working set.
         """
         ws = cls()
         try:
@@ -3239,9 +3239,9 @@ def _initialize(g=globals()):
 
 
 @_call_aside
-def _initialize_master_working_set():
+def _initialize_main_working_set():
     """
-    Prepare the master working set and make the ``require()``
+    Prepare the main working set and make the ``require()``
     API available.
 
     This function has explicit effects on the global state
@@ -3251,7 +3251,7 @@ def _initialize_master_working_set():
     Invocation by other packages is unsupported and done
     at their own risk.
     """
-    working_set = WorkingSet._build_master()
+    working_set = WorkingSet._build_main()
     _declare_state('object', working_set=working_set)
 
     require = working_set.require
diff --git a/venv/lib/python3.7/site-packages/pycares/__init__.py b/venv/lib/python3.7/site-packages/pycares/__init__.py
index 2ef51869..a42b2407 100644
--- a/venv/lib/python3.7/site-packages/pycares/__init__.py
+++ b/venv/lib/python3.7/site-packages/pycares/__init__.py
@@ -645,12 +645,12 @@ def __init__(self, hostent, ttl, aliases):
 
 
 class ares_query_soa_result(AresResult):
-    __slots__ = ('nsname', 'hostmaster', 'serial', 'refresh', 'retry', 'expires', 'minttl', 'ttl')
+    __slots__ = ('nsname', 'hostmain', 'serial', 'refresh', 'retry', 'expires', 'minttl', 'ttl')
     type = 'SOA'
 
     def __init__(self, soa):
         self.nsname = maybe_str(_ffi.string(soa.nsname))
-        self.hostmaster = maybe_str(_ffi.string(soa.hostmaster))
+        self.hostmain = maybe_str(_ffi.string(soa.hostmain))
         self.serial = soa.serial
         self.refresh = soa.refresh
         self.retry = soa.retry
diff --git a/venv/lib/python3.7/site-packages/pycares/__main__.py b/venv/lib/python3.7/site-packages/pycares/__main__.py
index 5fa68950..98c093a5 100644
--- a/venv/lib/python3.7/site-packages/pycares/__main__.py
+++ b/venv/lib/python3.7/site-packages/pycares/__main__.py
@@ -51,7 +51,7 @@ def cb(result, error):
             elif r.type == 'PTR':
                 parts.append('%s\t%s' % (txt, r.name))
             elif r.type == 'SOA':
-                parts.append('%s\t%s %s %d %d %d %d %d' % (txt, r.nsname, r.hostmaster, r.serial, r.refresh, r.retry, r.expires, r.minttl))
+                parts.append('%s\t%s %s %d %d %d %d %d' % (txt, r.nsname, r.hostmain, r.serial, r.refresh, r.retry, r.expires, r.minttl))
             elif r.type == 'SRV':
                 parts.append('%s\t%d %d %d %s' % (txt, r.priority, r.weight, r.port, r.host))
             elif r.type == 'TXT':
diff --git a/venv/lib/python3.7/site-packages/pycparser/ply/lex.py b/venv/lib/python3.7/site-packages/pycparser/ply/lex.py
index 4bdd76ca..eb368cb6 100644
--- a/venv/lib/python3.7/site-packages/pycparser/ply/lex.py
+++ b/venv/lib/python3.7/site-packages/pycparser/ply/lex.py
@@ -114,12 +114,12 @@ def __call__(self, *args, **kwargs):
 
 class Lexer:
     def __init__(self):
-        self.lexre = None             # Master regular expression. This is a list of
+        self.lexre = None             # Main regular expression. This is a list of
                                       # tuples (re, findex) where re is a compiled
                                       # regular expression and findex is a list
                                       # mapping regex group numbers to rules
         self.lexretext = None         # Current regular expression strings
-        self.lexstatere = {}          # Dictionary mapping lexer states to master regexs
+        self.lexstatere = {}          # Dictionary mapping lexer states to main regexs
         self.lexstateretext = {}      # Dictionary mapping lexer states to regex strings
         self.lexstaterenames = {}     # Dictionary mapping lexer states to symbol names
         self.lexstate = 'INITIAL'     # Current lexer state
@@ -484,13 +484,13 @@ def _names_to_funcs(namelist, fdict):
     return result
 
 # -----------------------------------------------------------------------------
-# _form_master_re()
+# _form_main_re()
 #
 # This function takes a list of all of the regex components and attempts to
-# form the master regular expression.  Given limitations in the Python re
-# module, it may be necessary to break the master regex into separate expressions.
+# form the main regular expression.  Given limitations in the Python re
+# module, it may be necessary to break the main regex into separate expressions.
 # -----------------------------------------------------------------------------
-def _form_master_re(relist, reflags, ldict, toknames):
+def _form_main_re(relist, reflags, ldict, toknames):
     if not relist:
         return []
     regex = '|'.join(relist)
@@ -518,8 +518,8 @@ def _form_master_re(relist, reflags, ldict, toknames):
         m = int(len(relist)/2)
         if m == 0:
             m = 1
-        llist, lre, lnames = _form_master_re(relist[:m], reflags, ldict, toknames)
-        rlist, rre, rnames = _form_master_re(relist[m:], reflags, ldict, toknames)
+        llist, lre, lnames = _form_main_re(relist[:m], reflags, ldict, toknames)
+        rlist, rre, rnames = _form_main_re(relist[m:], reflags, ldict, toknames)
         return (llist+rlist), (lre+rre), (lnames+rnames)
 
 # -----------------------------------------------------------------------------
@@ -943,7 +943,7 @@ def lex(module=None, object=None, debug=False, optimize=False, lextab='lextab',
     stateinfo = linfo.stateinfo
 
     regexs = {}
-    # Build the master regular expressions
+    # Build the main regular expressions
     for state in stateinfo:
         regex_list = []
 
@@ -963,13 +963,13 @@ def lex(module=None, object=None, debug=False, optimize=False, lextab='lextab',
 
         regexs[state] = regex_list
 
-    # Build the master regular expressions
+    # Build the main regular expressions
 
     if debug:
         debuglog.info('lex: ==== MASTER REGEXS FOLLOW ====')
 
     for state in regexs:
-        lexre, re_text, re_names = _form_master_re(regexs[state], reflags, ldict, linfo.toknames)
+        lexre, re_text, re_names = _form_main_re(regexs[state], reflags, ldict, linfo.toknames)
         lexobj.lexstatere[state] = lexre
         lexobj.lexstateretext[state] = re_text
         lexobj.lexstaterenames[state] = re_names
diff --git a/venv/lib/python3.7/site-packages/pygame/tests/test_utils/png.py b/venv/lib/python3.7/site-packages/pygame/tests/test_utils/png.py
index d0fba05a..4875a1a1 100644
--- a/venv/lib/python3.7/site-packages/pygame/tests/test_utils/png.py
+++ b/venv/lib/python3.7/site-packages/pygame/tests/test_utils/png.py
@@ -52,7 +52,7 @@
 # http://trac.browsershots.org/browser/trunk/pypng/lib/png.py?rev=2885
 
 # Incorporated into pypng by drj on 2009-03-12 from
-# //depot/prj/bangaio/master/code/png.py#67
+# //depot/prj/bangaio/main/code/png.py#67
 
 
 """
diff --git a/venv/lib/python3.7/site-packages/pytest_cache.py b/venv/lib/python3.7/site-packages/pytest_cache.py
index b293e3fa..75c2627c 100644
--- a/venv/lib/python3.7/site-packages/pytest_cache.py
+++ b/venv/lib/python3.7/site-packages/pytest_cache.py
@@ -160,7 +160,7 @@ def pytest_collection_modifyitems(self, session, config, items):
 
     def pytest_sessionfinish(self, session):
         config = self.config
-        if config.getvalue("showcache") or hasattr(config, "slaveinput"):
+        if config.getvalue("showcache") or hasattr(config, "subordinateinput"):
             return
         config.cache.set("cache/lastfailed", self.lastfailed)
 
diff --git a/venv/lib/python3.7/site-packages/scipy/optimize/lbfgsb.py b/venv/lib/python3.7/site-packages/scipy/optimize/lbfgsb.py
index 5425ffff..06486a3b 100644
--- a/venv/lib/python3.7/site-packages/scipy/optimize/lbfgsb.py
+++ b/venv/lib/python3.7/site-packages/scipy/optimize/lbfgsb.py
@@ -11,7 +11,7 @@
 ## License for the Python wrapper
 ## ==============================
 
-## Copyright (c) 2004 David M. Cooke <cookedm@physics.mcmaster.ca>
+## Copyright (c) 2004 David M. Cooke <cookedm@physics.mcmain.ca>
 
 ## Permission is hereby granted, free of charge, to any person obtaining a
 ## copy of this software and associated documentation files (the "Software"),
diff --git a/venv/lib/python3.7/site-packages/twisted/conch/scripts/tkconch.py b/venv/lib/python3.7/site-packages/twisted/conch/scripts/tkconch.py
index 9c48e8a7..d2e0b86e 100644
--- a/venv/lib/python3.7/site-packages/twisted/conch/scripts/tkconch.py
+++ b/venv/lib/python3.7/site-packages/twisted/conch/scripts/tkconch.py
@@ -31,7 +31,7 @@ def __init__(self, *args, **params):
         ## Standard heading: initialization
         Tkinter.Frame.__init__(self, *args, **params)
 
-        self.master.title('TkConch')
+        self.main.title('TkConch')
         self.localRemoteVar = Tkinter.StringVar()
         self.localRemoteVar.set('local')
 
@@ -91,7 +91,7 @@ def __init__(self, *args, **params):
         self.grid_rowconfigure(6, weight=1, minsize=64)
         self.grid_columnconfigure(2, weight=1, minsize=2)
 
-        self.master.protocol("WM_DELETE_WINDOW", sys.exit)
+        self.main.protocol("WM_DELETE_WINDOW", sys.exit)
 
 
     def getIdentityFile(self):
@@ -165,8 +165,8 @@ def doConnect(self):
             tkMessageBox.showerror('TkConch', 'Missing host or username.')
             finished = 0
         if finished:
-            self.master.quit()
-            self.master.destroy()
+            self.main.quit()
+            self.main.destroy()
             if options['log']:
                 realout = sys.stdout
                 log.startLogging(sys.stderr)
@@ -180,8 +180,8 @@ def doConnect(self):
             port = int(options['port'] or 22)
             log.msg((host,port))
             reactor.connectTCP(host, port, SSHClientFactory())
-            frame.master.deiconify()
-            frame.master.title('%s@%s - TkConch' % (options['user'], options['host']))
+            frame.main.deiconify()
+            frame.main.title('%s@%s - TkConch' % (options['user'], options['host']))
         else:
             self.focus()
 
diff --git a/venv/lib/python3.7/site-packages/twisted/conch/unix.py b/venv/lib/python3.7/site-packages/twisted/conch/unix.py
index d9c3f05c..aa5166b7 100644
--- a/venv/lib/python3.7/site-packages/twisted/conch/unix.py
+++ b/venv/lib/python3.7/site-packages/twisted/conch/unix.py
@@ -203,10 +203,10 @@ def getPty(self, term, windowSize, modes):
         self.environ['TERM'] = term
         self.winSize = windowSize
         self.modes = modes
-        master, slave = pty.openpty()
-        ttyname = os.ttyname(slave)
+        main, subordinate = pty.openpty()
+        ttyname = os.ttyname(subordinate)
         self.environ['SSH_TTY'] = ttyname
-        self.ptyTuple = (master, slave, ttyname)
+        self.ptyTuple = (main, subordinate, ttyname)
 
 
     def openShell(self, proto):
diff --git a/venv/lib/python3.7/site-packages/twisted/internet/defer.py b/venv/lib/python3.7/site-packages/twisted/internet/defer.py
index aa2c881b..a0879b1c 100644
--- a/venv/lib/python3.7/site-packages/twisted/internet/defer.py
+++ b/venv/lib/python3.7/site-packages/twisted/internet/defer.py
@@ -296,7 +296,7 @@ def addCallbacks(self, callback, errback=None,
         """
         Add a pair of callbacks (success and error) to this L{Deferred}.
 
-        These will be executed when the 'master' callback is run.
+        These will be executed when the 'main' callback is run.
 
         @return: C{self}.
         @rtype: a L{Deferred}
diff --git a/venv/lib/python3.7/site-packages/twisted/internet/interfaces.py b/venv/lib/python3.7/site-packages/twisted/internet/interfaces.py
index 3806b9ef..1addb49f 100644
--- a/venv/lib/python3.7/site-packages/twisted/internet/interfaces.py
+++ b/venv/lib/python3.7/site-packages/twisted/internet/interfaces.py
@@ -1195,7 +1195,7 @@ def spawnProcess(processProtocol, executable, args=(), env={}, path=None,
             POSIX systems.)
 
         @param usePTY: if true, run this process in a pseudo-terminal.
-            optionally a tuple of C{(masterfd, slavefd, ttyname)}, in which
+            optionally a tuple of C{(mainfd, subordinatefd, ttyname)}, in which
             case use those file descriptors.  (Not available on all systems.)
 
         @param childFDs: A dictionary mapping file descriptors in the new child
diff --git a/venv/lib/python3.7/site-packages/twisted/internet/process.py b/venv/lib/python3.7/site-packages/twisted/internet/process.py
index 5caa841b..89b568f6 100644
--- a/venv/lib/python3.7/site-packages/twisted/internet/process.py
+++ b/venv/lib/python3.7/site-packages/twisted/internet/process.py
@@ -1019,23 +1019,23 @@ def __init__(self, reactor, executable, args, environment, path, proto,
         _BaseProcess.__init__(self, proto)
 
         if isinstance(usePTY, (tuple, list)):
-            masterfd, slavefd, _ = usePTY
+            mainfd, subordinatefd, _ = usePTY
         else:
-            masterfd, slavefd = pty.openpty()
+            mainfd, subordinatefd = pty.openpty()
 
         try:
             self._fork(path, uid, gid, executable, args, environment,
-                       masterfd=masterfd, slavefd=slavefd)
+                       mainfd=mainfd, subordinatefd=subordinatefd)
         except:
             if not isinstance(usePTY, (tuple, list)):
-                os.close(masterfd)
-                os.close(slavefd)
+                os.close(mainfd)
+                os.close(subordinatefd)
             raise
 
         # we are now in parent process:
-        os.close(slavefd)
-        fdesc.setNonBlocking(masterfd)
-        self.fd = masterfd
+        os.close(subordinatefd)
+        fdesc.setNonBlocking(mainfd)
+        self.fd = mainfd
         self.startReading()
         self.connected = 1
         self.status = -1
@@ -1046,44 +1046,44 @@ def __init__(self, reactor, executable, args, environment, path, proto,
         registerReapProcessHandler(self.pid, self)
 
 
-    def _setupChild(self, masterfd, slavefd):
+    def _setupChild(self, mainfd, subordinatefd):
         """
         Set up child process after C{fork()} but before C{exec()}.
 
         This involves:
 
-            - closing C{masterfd}, since it is not used in the subprocess
+            - closing C{mainfd}, since it is not used in the subprocess
 
             - creating a new session with C{os.setsid}
 
             - changing the controlling terminal of the process (and the new
-              session) to point at C{slavefd}
+              session) to point at C{subordinatefd}
 
-            - duplicating C{slavefd} to standard input, output, and error
+            - duplicating C{subordinatefd} to standard input, output, and error
 
             - closing all other open file descriptors (according to
               L{_listOpenFDs})
 
             - re-setting all signal handlers to C{SIG_DFL}
 
-        @param masterfd: The master end of a PTY file descriptors opened with
+        @param mainfd: The main end of a PTY file descriptors opened with
             C{openpty}.
-        @type masterfd: L{int}
+        @type mainfd: L{int}
 
-        @param slavefd: The slave end of a PTY opened with C{openpty}.
-        @type slavefd: L{int}
+        @param subordinatefd: The subordinate end of a PTY opened with C{openpty}.
+        @type subordinatefd: L{int}
         """
-        os.close(masterfd)
+        os.close(mainfd)
         os.setsid()
-        fcntl.ioctl(slavefd, termios.TIOCSCTTY, '')
+        fcntl.ioctl(subordinatefd, termios.TIOCSCTTY, '')
 
         for fd in range(3):
-            if fd != slavefd:
+            if fd != subordinatefd:
                 os.close(fd)
 
-        os.dup2(slavefd, 0) # stdin
-        os.dup2(slavefd, 1) # stdout
-        os.dup2(slavefd, 2) # stderr
+        os.dup2(subordinatefd, 0) # stdin
+        os.dup2(subordinatefd, 1) # stdout
+        os.dup2(subordinatefd, 2) # stderr
 
         for fd in _listOpenFDs():
             if fd > 2:
diff --git a/venv/lib/python3.7/site-packages/twisted/mail/scripts/mailmail.py b/venv/lib/python3.7/site-packages/twisted/mail/scripts/mailmail.py
index 2aa5d460..1352cc0b 100644
--- a/venv/lib/python3.7/site-packages/twisted/mail/scripts/mailmail.py
+++ b/venv/lib/python3.7/site-packages/twisted/mail/scripts/mailmail.py
@@ -333,7 +333,7 @@ def sendmail(host, options, ident):
 
 def senderror(failure, options):
     recipient = [options.sender]
-    sender = '"Internally Generated Message ({})"<postmaster@{}>'.format(
+    sender = '"Internally Generated Message ({})"<postmain@{}>'.format(
              sys.argv[0], smtp.DNSNAME.decode("ascii"))
     error = NativeStringIO()
     failure.printTraceback(file=error)
diff --git a/venv/lib/python3.7/site-packages/twisted/mail/test/test_mailmail.py b/venv/lib/python3.7/site-packages/twisted/mail/test/test_mailmail.py
index 919b3f42..73a6f59f 100644
--- a/venv/lib/python3.7/site-packages/twisted/mail/test/test_mailmail.py
+++ b/venv/lib/python3.7/site-packages/twisted/mail/test/test_mailmail.py
@@ -367,7 +367,7 @@ def test_senderror(self):
         sender if an error occurs while sending mail to the recipient.
         """
         def sendmail(host, sender, recipient, body):
-            self.assertRegex(sender, "postmaster@")
+            self.assertRegex(sender, "postmain@")
             self.assertEqual(recipient, ["testsender"])
             self.assertRegex(body.getvalue(), "ValueError")
             return Deferred()
diff --git a/venv/lib/python3.7/site-packages/twisted/names/client.py b/venv/lib/python3.7/site-packages/twisted/names/client.py
index f7829dd4..3773a5c6 100644
--- a/venv/lib/python3.7/site-packages/twisted/names/client.py
+++ b/venv/lib/python3.7/site-packages/twisted/names/client.py
@@ -540,7 +540,7 @@ def clientConnectionFailed(self, connector, reason):
             C{deferred}.
         @type reason: L{twisted.python.failure.Failure}
         """
-        # Copy the current pending deferreds then reset the master
+        # Copy the current pending deferreds then reset the main
         # pending list. This prevents triggering new deferreds which
         # may be added by callback or errback functions on the current
         # deferreds.
diff --git a/venv/lib/python3.7/site-packages/twisted/names/test/test_dns.py b/venv/lib/python3.7/site-packages/twisted/names/test/test_dns.py
index 03c31585..244fed0c 100644
--- a/venv/lib/python3.7/site-packages/twisted/names/test/test_dns.py
+++ b/venv/lib/python3.7/site-packages/twisted/names/test/test_dns.py
@@ -3211,7 +3211,7 @@ def bytes(cls):
             b'\xff\xff\xff\xff' # RR TTL
             b'\x00\x27' # RDLENGTH 39
             b'\x03ns1\xc0\x0c' # Mname (ns1.example.com (compression ref b15)
-            b'\x0ahostmaster\xc0\x0c' # rname (hostmaster.example.com)
+            b'\x0ahostmain\xc0\x0c' # rname (hostmain.example.com)
             b'\xff\xff\xff\xfe' # Serial
             b'\x7f\xff\xff\xfd' # Refresh
             b'\x7f\xff\xff\xfc' # Retry
@@ -3263,7 +3263,7 @@ def kwargs(cls):
                     payload=dns.Record_SOA(
                         ttl=0xffffffff,
                         mname=b'ns1.example.com',
-                        rname=b'hostmaster.example.com',
+                        rname=b'hostmain.example.com',
                         serial=0xfffffffe,
                         refresh=0x7ffffffd,
                         retry=0x7ffffffc,
@@ -3386,7 +3386,7 @@ def bytes(cls):
             b'\xff\xff\xff\xff' # RR TTL
             b'\x00\x27' # RDLENGTH 39
             b'\x03ns1\xc0\x0c' # mname (ns1.example.com (compression ref b15)
-            b'\x0ahostmaster\xc0\x0c' # rname (hostmaster.example.com)
+            b'\x0ahostmain\xc0\x0c' # rname (hostmain.example.com)
             b'\xff\xff\xff\xfe' # Serial
             b'\x7f\xff\xff\xfd' # Refresh
             b'\x7f\xff\xff\xfc' # Retry
@@ -3452,7 +3452,7 @@ def kwargs(cls):
                     payload=dns.Record_SOA(
                         ttl=0xffffffff,
                         mname=b'ns1.example.com',
-                        rname=b'hostmaster.example.com',
+                        rname=b'hostmain.example.com',
                         serial=0xfffffffe,
                         refresh=0x7ffffffd,
                         retry=0x7ffffffc,
diff --git a/venv/lib/python3.7/site-packages/twisted/names/test/test_names.py b/venv/lib/python3.7/site-packages/twisted/names/test/test_names.py
index a1c6c633..8c96fcc5 100644
--- a/venv/lib/python3.7/site-packages/twisted/names/test/test_names.py
+++ b/venv/lib/python3.7/site-packages/twisted/names/test/test_names.py
@@ -66,7 +66,7 @@ def __init__(self, soa, records):
 
 my_soa = dns.Record_SOA(
     mname = u'my-domain.com',
-    rname = b'postmaster.test-domain.com',
+    rname = b'postmain.test-domain.com',
     serial = 130,
     refresh = 12345,
     minimum = 1,
@@ -920,14 +920,14 @@ def queryProtocol(self, *args, **kwargs):
 class SecondaryAuthorityServiceTests(unittest.TestCase):
     """
     Tests for L{SecondaryAuthorityService}, a service which keeps one or more
-    authorities up to date by doing zone transfers from a master.
+    authorities up to date by doing zone transfers from a main.
     """
 
     def test_constructAuthorityFromHost(self):
         """
         L{SecondaryAuthorityService} can be constructed with a C{str} giving a
-        master server address and several domains, causing the creation of a
-        secondary authority for each domain and that master server address and
+        main server address and several domains, causing the creation of a
+        secondary authority for each domain and that main server address and
         the default DNS port.
         """
         primary = '192.168.1.2'
@@ -948,9 +948,9 @@ def test_constructAuthorityFromHost(self):
     def test_constructAuthorityFromHostAndPort(self):
         """
         L{SecondaryAuthorityService.fromServerAddressAndDomains} constructs a
-        new L{SecondaryAuthorityService} from a C{str} giving a master server
+        new L{SecondaryAuthorityService} from a C{str} giving a main server
         address and DNS port and several domains, causing the creation of a secondary
-        authority for each domain and that master server address and the given
+        authority for each domain and that main server address and the given
         DNS port.
         """
         primary = '192.168.1.3'
@@ -1083,9 +1083,9 @@ def test_lookupAddress(self):
 $TTL    1w
 example.com. IN SOA dns.example.com (
             2013120201 ; serial number of this zone file
-            1d         ; slave refresh
-            2h         ; slave retry time in case of a problem
-            4w         ; slave expiration time
+            1d         ; subordinate refresh
+            2h         ; subordinate retry time in case of a problem
+            4w         ; subordinate expiration time
             1h         ; maximum caching time in case of failed lookups
             )
 
diff --git a/venv/lib/python3.7/site-packages/twisted/plugin.py b/venv/lib/python3.7/site-packages/twisted/plugin.py
index 82522ee2..59fe03ca 100644
--- a/venv/lib/python3.7/site-packages/twisted/plugin.py
+++ b/venv/lib/python3.7/site-packages/twisted/plugin.py
@@ -246,7 +246,7 @@ def pluginPackagePaths(name):
     #
     # Note as well that only '__init__.py' will be considered to make a
     # directory a package (and thus exclude it from this list).  This means
-    # that if you create a master plugin package which has some other kind of
+    # that if you create a main plugin package which has some other kind of
     # __init__ (eg, __init__.pyc) it will be incorrectly treated as a
     # supplementary plugin directory.
     return [
diff --git a/venv/lib/python3.7/site-packages/twisted/python/test/test_release.py b/venv/lib/python3.7/site-packages/twisted/python/test/test_release.py
index 5180880d..64f439f1 100644
--- a/venv/lib/python3.7/site-packages/twisted/python/test/test_release.py
+++ b/venv/lib/python3.7/site-packages/twisted/python/test/test_release.py
@@ -42,7 +42,7 @@
 else:
     skip = None
 
-testingSphinxConf = u"master_doc = 'index'\n"
+testingSphinxConf = u"main_doc = 'index'\n"
 
 try:
     import pydoctor.driver
@@ -673,7 +673,7 @@ class SphinxBuilderTests(TestCase):
 
     confContent = u"""\
                   source_suffix = '.rst'
-                  master_doc = 'index'
+                  main_doc = 'index'
                   """
     confContent = textwrap.dedent(confContent)
 
diff --git a/venv/lib/python3.7/site-packages/twisted/test/test_iutils.py b/venv/lib/python3.7/site-packages/twisted/test/test_iutils.py
index 2542547c..7ee8ae2c 100644
--- a/venv/lib/python3.7/site-packages/twisted/test/test_iutils.py
+++ b/venv/lib/python3.7/site-packages/twisted/test/test_iutils.py
@@ -151,7 +151,7 @@ def test_outputSignal(self):
         it to exit.
         """
         # Use SIGKILL here because it's guaranteed to be delivered. Using
-        # SIGHUP might not work in, e.g., a buildbot slave run under the
+        # SIGHUP might not work in, e.g., a buildbot subordinate run under the
         # 'nohup' command.
         scriptFile = self.makeSourceFile([
             "import sys, os, signal",
diff --git a/venv/lib/python3.7/site-packages/twisted/test/test_process.py b/venv/lib/python3.7/site-packages/twisted/test/test_process.py
index a3048d89..418754ce 100644
--- a/venv/lib/python3.7/site-packages/twisted/test/test_process.py
+++ b/venv/lib/python3.7/site-packages/twisted/test/test_process.py
@@ -1851,7 +1851,7 @@ def test_mockForkErrorClosePTY(self):
 
     def test_mockForkErrorPTYGivenFDs(self):
         """
-        If a tuple is passed to C{usePTY} to specify slave and master file
+        If a tuple is passed to C{usePTY} to specify subordinate and main file
         descriptors and that C{os.fork} raises an exception, these file
         descriptors aren't closed.
         """
diff --git a/venv/lib/python3.7/site-packages/twisted/test/test_tcp.py b/venv/lib/python3.7/site-packages/twisted/test/test_tcp.py
index b8791bb9..97c1ef3d 100644
--- a/venv/lib/python3.7/site-packages/twisted/test/test_tcp.py
+++ b/venv/lib/python3.7/site-packages/twisted/test/test_tcp.py
@@ -1050,15 +1050,15 @@ class ConnectionLosingProtocol(protocol.Protocol):
     def connectionMade(self):
         self.transport.write(b"1")
         self.transport.loseConnection()
-        self.master._connectionMade()
-        self.master.ports.append(self.transport)
+        self.main._connectionMade()
+        self.main.ports.append(self.transport)
 
 
 
 class NoopProtocol(protocol.Protocol):
     def connectionMade(self):
         self.d = defer.Deferred()
-        self.master.serverConns.append(self.d)
+        self.main.serverConns.append(self.d)
 
     def connectionLost(self, reason):
         self.d.callback(True)
diff --git a/venv/lib/python3.7/site-packages/twisted/words/im/interfaces.py b/venv/lib/python3.7/site-packages/twisted/words/im/interfaces.py
index fa2b0658..d64a8e99 100644
--- a/venv/lib/python3.7/site-packages/twisted/words/im/interfaces.py
+++ b/venv/lib/python3.7/site-packages/twisted/words/im/interfaces.py
@@ -14,7 +14,7 @@
 # Persons have Conversation components
 # Groups have GroupConversation components
 # Persons and Groups are associated with specific Accounts
-# At run-time, Clients/Accounts are slaved to a User Interface
+# At run-time, Clients/Accounts are subordinated to a User Interface
 #   (Note: User may be a bot, so don't assume all UIs are built on gui toolkits)
 
 
diff --git a/venv/lib/python3.7/site-packages/twisted/words/protocols/irc.py b/venv/lib/python3.7/site-packages/twisted/words/protocols/irc.py
index 389e10b9..1172d200 100644
--- a/venv/lib/python3.7/site-packages/twisted/words/protocols/irc.py
+++ b/venv/lib/python3.7/site-packages/twisted/words/protocols/irc.py
@@ -2281,7 +2281,7 @@ def ctcpQuery_USERINFO(self, user, channel, data):
 
     def ctcpQuery_CLIENTINFO(self, user, channel, data):
         """
-        A master index of what CTCP tags this client knows.
+        A main index of what CTCP tags this client knows.
 
         If no arguments are provided, respond with a list of known tags, sorted
         in alphabetical order.