1.12.2 and Forge LTS

Visual Studio Code recently made changes to require Java 11. I tried my best to get Forge 1.12.2 running after this change, but without changing IDEs it isn't possible. Forge 1.12.2 uses ForgeGradle 2.3, which in turn depends on Gradle 2.14, which is incompatible with Java 11. VSCode planned ahead and provided the java.import.gradle.java.home option, but it only works for Gradle 4.7 and up.

Because of these breaking changes, I have decided to stop developing for 1.12.2 and start porting to the recently announced Forge LTS which stands at 1.15.2. I have no plans to update to 1.13, 1.14 or 1.16 currently.