Unit Testing

[rycoll]

It would be good to do some more rigorous testing of some parts of the code. Candidates for testing at the moment include:

• the code that handles Years (in particular, the code that handles games that go for over 100 years) (tested)
• the code for making new rooms (in particular, the error handling parts) (lightly tested)
• the code that handles worker distribution and resources (removed from game)

Add other things that should be tested below.

[rycoll]

The special event picking code definitely needs to be tested. (done)