More fixups of use of new Event module.

git-svn-id: svn://graphite/hackamore/trunk/Hackamore@54 57787f05-46dc-4277-aca0-fea81b7b9c9c
Added UT for Event (which passes).

git-svn-id: svn://graphite/hackamore/trunk/Hackamore@55 57787f05-46dc-4277-aca0-fea81b7b9c9c
Expanding Event UT to play with state representation.

git-svn-id: svn://graphite/hackamore/trunk/Hackamore@56 57787f05-46dc-4277-aca0-fea81b7b9c9c