gitconfig: default to patience diff.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Don't try to undefine a function that doesn't exist.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
vimrc: implement tidying.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Update submodules.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Merge branch 'master' into work