Does straightforward conversions from GameMaker Studio 2 extension format (.yy) to GameMaker: Studio extension format (.extension.gmx).
Use like:
neko yy2gmx.n C:/Test/myext.yy C:/Test/myext.extension.gmx
This only copies files and setups function/macro definitions for them. It will make no attempts to fix incompatible functions or syntax.
License: GPL v3