IDA binary differ. Since code.google.com/p/patchdiff2/ seemed abandoned, I did the obvious thing… And that version seemed abandoned as well, so I did the next obvious thing(?)
Updated to build/run with all IDA versions after 6.5 (currently through 7.0)
vs directory updated to build with Visual Studio 2013 and later
The Visual Studio project and the Unix Makefile utilize relative paths to the SDK include directory. You should clone into <SDKDIR>/plugins/