First pass at test scripting

There's an example script, an example test deck, some modifications to
Classes to allow for testing (and also some more debugging stuff) and a
new testing-universe version of Hanabi. A script can now be executed on
the command line by importing HanabiTest and then calling
tst_play_hanabi, passing in the number associated with the test deck and
script you want to use.

The main Hanabi script was also modified because part of this change
involved pulling out a bunch of the HanabiGame init and calling it at
the Hanabi level. That enables the test script to swap in a test deck at
the right time, so that the card IDs all match up and etc.

Limitations:
-cluing is not yet implemented
-you still have to enter the player order yourself
add cluing to test scripts

The script syntax is stupid ugly now. On the bright side, you can also
make comments in it using #.