CompatHelper: bump compat for SpecialFunctions to 2, (keep existing compat) (#188)

* CompatHelper: bump compat for SpecialFunctions to 2, (keep existing compat)

* Update Project.toml

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>
Co-authored-by: David Widmann <devmotion@users.noreply.github.com>

Author: 3 people

Project.toml

@@ -26,7 +26,7 @@ FunctionWrappers = "1"
 LogExpFunctions = "0.3"
 MacroTools = "0.5"
 NaNMath = "0.3"
-SpecialFunctions = "0.8, 0.9, 0.10, 1.0"
+SpecialFunctions = "0.8, 0.9, 0.10, 1.0, 2"
 StaticArrays = "0.10, 0.11, 0.12, 1.0"
 julia = "1"