* Give Tsangan layout a real Fn2 layer
* Disable mouse keys to work around qmk#8323
I don't actually use this feature, so there's no reason for it to be
enabled anyway, and it seems to cause spurious wakeups on Windows.
This is a place for users to put code that they might use between keyboards. If you build the keymap mine, /users/mine/rules.mk will be included in your build, and /users/mine/ will be in your path - keep these things in mind when naming your files and referencing them from other places.