Added hintstring prototype; use :hints, :ars, or M-x colemak-evil-hints to access
Added commands:

:git = M-x magit-status
:c = :comment = M-x comment-or-uncomment-region
Added :eval, :describe-key, :describe-function

Updated hintstring to reflect these commands.
Added hints to tips
remove "ars" alias

I found it confusing--it's Latin for "art" or "skill", but what does it
mean in this context?--before realizing that it's just the leftmost
three keys on the home row. Since :h does the same thing, I don't think
it's necessary.