KTX 1.9.8-b3

The first release to feature the new ktx-graphics module with ShapeRenderer extensions and various graphics-related utilities moved from the ktx-app module.

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• [UPDATE] Updated to Kotlin 1.2.41.
• [UPDATE] Updated to Gradle 4.7.
• [FEATURE] (ktx-graphics) Added new graphics module with the following ShapeRenderer extension methods:
  • arc
  • box
  • circle
  • cone
  • ellipse
  • rect
  • rectLine
  • rotate
  • scale
  • translate
  • triangle
• [CHANGE] (ktx-app, ktx-graphics) Utility functions moved from ktx-app to the new ktx-graphics:
  • color
  • Color.copy
  • Batch.use
  • ShaderProgram.use
• [MISC] Removed migration guides from very old versions. If you are in a process of migrating an existing application to the latest KTX and facing any errors, see README files in 1.9.8-b2 tag.