Optimized imports. Fixed build.
Prohibit all modifiers for enum entries

 #KT-2679 Fixed
Minor, fix some warnings in DeclarationsChecker
Make 'when' on nullable enums exhaustive if 'null' entry is present

 #KT-2902 Fixed
Fix incorrect "senseless null in when" on nullable type
Prohibit type parameters for enum classes

 #KT-5696 Fixed
Minor, don't call Type.getObjectType on array
Prohibit 'override' on classes and all modality on objects

 #KT-3464 Fixed
Don't output trailing spaces in Printer

Also don't output trailing empty lines in TestGenerator
Reorder imports in test generator

To make IDEA's Optimize Imports action a no-op on most of the generated tests
Regenerate tests

After recent changes to Printer and TestGenerator
Regenerate injectors and keyword strings

After recent changes to Printer
TODO