Revert "Revert "2.5d""

This reverts commit f57a96f8c33427cd133e110b9e40fe65315132b3.

Conflicts:
Library/CurrentLayout.dwlt
Library/ScriptAssemblies/Assembly-CSharp.dll
Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
Library/assetDatabase3
Library/guidmapper
Library/metadata/5b/5b24b4f8208abae439c0cc32c7e81199