.i3/config: comment autostarting better
.bashrc: rewrite much smaller & better
.shellrc: rewrite smaller & clearer; aliases separate
.shell_aliases: new file to hold 'shell shortcuts'
.shellrc: +1 fold
.shell_aliases: -anki (only start using dmenu)
.zshrc: comment better; +folding
necessary-packages.md: try to make it at least a *bit* actually Markdown-y