Merge pull request #2 from danvk/master

Remove logging statement
add git version checker
`git add` symlinks created by mk-git
make `git branch-upstream` back-compat w/ git 1.7
Merge pull request #5 from ryan-williams/bu-fixes

`git branch` upstream-setting fixes
fix some git-copy-diffs cleanup code

file removing was not robust to filenames with spaces
fix some arg-quoting
use python list comparison for `git vgte`
cleaner regex in `g vgte`
autopep8
more autopep8
include tags in `gln` display
Make .git-rc add correct directories to PATH on zsh
Generalize issues script to other github pages
Merge pull request #6 from danvk/work-on-zsh

Make .git-rc add correct directories to PATH on zsh
Merge pull request #7 from danvk/github-command

Generalize issues script to other github pages