Docs: Documentation changes, such as YARD markup, or README.md, or something along those lines.

External: touches something in /external, or the Gemfile, or something like that.

Heartbleed: Has to do with heartbleed. This will go away soon, but there are three outstanding still...

Library: Touches something in /lib.

Meterpreter: Has to do with Meterpreter, or depends on a Meterpreter change to land to work.

Misc: plugins and scripts, anything that's not otherwise defined.

Module: Touches something in /modules

Specs: Has specs (an rspec test).

Newbie Friendly: Something that's pretty easy to test or tackle.