zsh: miscellaneous zsh touch-ups
vimrc: miscellaneous .vimrc config tweaks
vimrc: add ,T sets current test module
vimrc: add ,ob opens blank.rst below
vimrc: add ,gs alias for harder to reach ^
plug: add Ag silver searcher plugin
plug: get UltiSnips working
vim: improve Applescript support
vim: fix class keyword mis-highlighting
plug: install vim-textobj for python method hilite
ignore: add zsh cache to .gitignore
git: fixes some problem with images I think