Test Staging

I have bundled a bunch of test dependencies here for convenience.

arcs is a series of tiny archives to test extraction with.

Repos and where they come from:

'git': https://github.com/ggreer/the_silver_searcher
'hg': https://bitbucket.org/sjl/hg-prompt/
'tmux.tar.gz': https://github.com/tmux/tmux/releases/download/2.0/tmux-2.0.tar.gz