Added test for must and maximizing could
Added test for the case when no must can be part of the booking
Changed name on previous test and added new must/could - WOOTB
Added new test for musts/could: First possible group chosen - WOOTB
Added a slightly more extensive musts / maximize could test
New test - maximize amount of attending - given the duration and called.
Faking it for now - I don't want to push failing tests!