.ignore v2.2.1-RC1

Implemented enhancements:

• Migration to the native IDE indexing
• EAP repository channel
• Prettier (.prettierignore) support #466

Fixed bugs:

• File colouring not working #462
• ~/.gitignore_global is not handled #453
• NPE in MatcherUtil.match #457
• 'Outer ignore rules' shows previous project's exclude files #460
• ExpiringMap causes ArrayIndexOutOfBoundsException #461
• FileTypeManager.associate run in write-unsafe context #471