added name attribute to Person for looking up thoughts
added thoughts prototype

thoughts load from json and are arbitrarily named.
right now one appears when the player switch bodies
and disappears after a few seconds.
the thoughts are just drawn with pixi graphics.
we can decide on improved visuals later.
there are plans to migrate thoughts to their own
class once they are better fleshed out.
Merge branch 'master' into feature/text-callouts

fixed the underscore discrepancy, that's my fault
for being over ambitious to move things around

Conflicts:
	Program.js