Supports IMEs required for inputting Chinese, Japanese, Korean, and other languages

[nexryai]

IMEs are used to input CJK characters, but the following issues occur when using IMEs with this library.

• The candidate popup does not appear in the correct position.
• The shortcut keys (Tab, Space, up/down arrow keys) used to select IME suggestions are overwritten by the editor's shortcut keys and do not function.