Testing framework

[MHCooke]

As a developer, I want to unit test my code so that I can be more confident that it will not regress.

• Choose a testing framework

[Jambls]

I feel that googltest is probably the best option to start with, it seems to top lists most often. I don't know if it lets you test "embedded" stuff easily, but I don't think what we're doing is actually truly embedded.

@MHCooke @MarkAHarley @bear-in-the-air what do yous think?

[MarkAHarley]

Google Test seems pretty intuitive, would be happy to go for that.

[Jambls]

Fine by me.