crontab: clean up stale vim swapfiles regularly
git: use histogram diff algorithm everywhere
git: add some useful aliases
git: ignore more byte-compiled files
vim: pairs backspace fixes
vim: use keepalt when reading in templates
vim: make 'loaded' explicitly global in vim template
vim: use minimal diffs in vimdiff
vim: add mapping to copy filename
zsh: remove useless eval
zsh: unset TMUX in new terminals