Adds sonics, complete with nerf.

This is a pretty serious nerf. See comments in PR for details.
Adds earplugs
Adds sonics and earplugs

Sonics are now 4 for 4 and earplugs are 2, because nukeops.
Adds random and costs for random.
Merge pull request #145 from Octobomb/sonic-grenades

Sonic grenades and earplugs 2: Why must everything take 2 goes.