* uber/master:
  Setup Kotlin home whenever the kotlin gradle plugin is on the classpath. (uber#464)
  Update several dependencies to latest (uber#462)
  Remove kotlin-dev repo as 1.1.3 is now released
  Add support for mixed kotlin and java in regular kotlin modules. (uber#461)
  Publish v0.22.1
  Fix rule type propagation
  Publish v0.22.0
  Update kotlin, gradle and buck versions (uber#460)
  Add kotlin android integration test and fixup source detection (uber#459)
  Kotlin Android Support (uber#458)
  Use more abstractions (uber#457)
  Prefer abstractions over implementations for upcoming kotlin refactors (uber#456)
  Add option to exclude some resources from aapt (uber#455)
  Bump to gradle 4.0 stable. (uber#454)
  Publish v0.21.0
  Migrate to kotlin in memory compiler support in buck (uber#450)
  Change how dependencies are resolved in preparation for Andrioid Gradle Plugin 3.x (uber#451)
  Switch the ordering of build config fields. (uber#449)
  Publish v0.20.10
  Revert "Add empty resource rule if using resource union. (uber#438)"