Performance Enhancement and Bug Fixes

[pjkaufman]

Fixes #302
Fixes #301

Changes Made:

• made sure to not wait on locale change to continue loading plugin as that is not necessary and it is almost always guaranteed to load before a user would get to the settings tab option
• Updated debug message to make it clear that the change made only affects this plugin
• Updated spaces between Chinese and English characters to ignore images and to only affect the contents of either bold or italics text
  • Note: that nesting of italics and bold is not currently supported
• Added tests to help ensure that we do not accidentally reintroduce these issues down the line
• Added helper methods to mdast
• Added ignore types for bold and italics