Change the name of my remote to 'mine'

I've been using 'mine' for a while except for daveconfig. Switch from
'github' to 'mine'.
Add function for isolated vader testing

Add vader_isolated function to construct an isolated test environment.
It still loads something (I get an error loading redirecthelpers), so
it's not perfect.
sub: Add travis to textobj-word-column
Revert "local: Make msysgit and mintty work together"

Revert accidentally checked in 'local' change.

This reverts commit 8404892c22efef8982cd15aa43267448958fc76c.