ENH: Limit run commands to local buffers.

Without this loading an enaml file after a python file will call `enaml-run` on the python file (and vice-versa when switching load order).
Merge branch 'master' of https://github.com/tonysyu/dotfiles
Remove jedi bundle
Add python-mode
Add config flags for python-mode
Update enthought snippets
Remove hexHighlight
Add traceback.print_stack snippet
Update columns for python-mode
Stop tracking enaml.vim (it's a symlink)
Update local gitignore
Update python-mode settings
Remove snipmate-snippets bundle
Add snipmate-snippets from upstream repo
Ignore auto-created directories.
Update python-mode to 0.6.17
Add IPython magics: ptree and array_paste
Add a few common snippets
Add some python names to suppress warnings
Use undo directory