Change Msg to hold a few messages
Move msg to lib/mid so other things can use it
Say what's being picked up as it is picked up
Remove a unused assingment.

Fixes #90
More detailed item status messages
Merge pull request #97 from eaburns/dev/eaburns

Remove a unused assingment.
Minor optimization
Merge pull request #98 from mccoyst/pickups

Informative messages when items are picked up
The grey sword stone hold a str-based sword