Remove 1.12 files, move to 1.15.2

Author: TheGoldCrayon

.gitignore

@@ -1,84 +1,25 @@
-### Windows ###
-
-thumbs.db
-*.db
-
-### Java ###
-
-*.class
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.war
-*.ear
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-
-### Eclipse ###
-
-*.pydevproject
-.metadata
-.gradle
-bin/
-tmp/
-*.tmp
-*.bak
-*.swp
-*~.nib
-local.properties
-.settings/
-.loadpath
-
-# Eclipse Core
-.project
-
-# External tool builders
-.externalToolBuilders/
-
-# Locally stored "Eclipse launch configurations"
+# eclipse
+bin
 *.launch
-
-# CDT-specific
-.cproject
-
-# JDT-specific (Eclipse Java Development Tools)
+.settings
+.metadata
 .classpath
+.project
 
-# Java annotation processor (APT)
-.factorypath
-
-# PDT-specific
-.buildpath
-
-# sbteclipse plugin
-.target
-
-# TeXlipse plugin
-.texlipse
-
-### Intellij IDEA ###
-
-*.iml
+# idea
+out
 *.ipr
 *.iws
+*.iml
+.idea
 
-.idea/
-.idea_modules/
-
-/out/
-eclipse/
-classes
-*.bat
-
-### Minecraft ###
-/build/
-/run/
+# gradle
+build
+.gradle
 
-libs
-GT2-2.09h
-backup
+# other
+eclipse
+run
 
-terrain.png
+# Files from Forge MDK
+forge*changelog.txt