add align-columns(1) helper for graphviz diagrams
openbox: make workspace move consistent with focus
xbindkeysrc: add shortcut to invert screen colors
openbox: rebind C-A-B fullscreen, C-A-Z minimize
Xdefaults: switch to base16-eighties dark theme
makefile: fix warning about `make -j1` option

make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
zsh: rubygems: $HOME/.rubygems wasn't always used
add tty-to-hex script to help edit weechat themes
openbox: maximize XTerm and remove decorations
Xdefaults: use Tamzen font for dark color theme