v9.4.0

[9.4.0] - 2020.09.06

Changed

• Updated Gradle to 6.6.1 version
• Each task will output reports into subdirectory inside build/reports/ktlint directory to fix non-working caching #379
• Set default ktlint version to 0.38.1

Fixed

• KtLint was not checking files that contains whitespace in path or name #362
• Skip check if incremental changes contains only removed files #385