Kotlin for Forge

Kotlin for Forge 1.12.1

• Updated to Kotlin 1.5.10, Updated to coroutines 1.5.0, Updated to serialization 1.2.1
• Added a missing serialization library that went missing in 1.12.0
• Finally removed the MINECRAFT thing that was deprecated a while ago
• Improved the buildscript and fixed some deprecation warnings, thanks Username404-59 on GitHub

• Updated to Kotlin 1.5.0, Updated to coroutines 1.5.0-RC, updated to serialization 1.2.0
• Forge Gradle 4 and Kotlin Gradle plugin now require Gradle 6.8.1. Update by changing the version of the gradle wrapper in gradle/wrapper/gradle-wrapper.properties.
• Added a missing coroutines module that caused an issue in KFF 1.11.0

• Downgraded to coroutines 1.4.2 due to missing class errors

• Updated to Kotlin 1.4.32, Updated to coroutines 1.4.3

• Updated to Kotlin 1.4.31, Updated to serialization 1.1.0

• Updated to Kotlin 1.4.30

• Fixed a few things to match the new EventBus version.
• Fix #11 and #12. Event bus wrapper now posts events properly.
• Now includes the Kotlin JSON Serialization library.