Add rule 306.
Update score.
Merge pull request #9 from worldnamer/306

306: Procedure for removing null, incorrect, or dead rules.
Removes rule 210, per issue #10.
Merge pull request #12 from worldnamer/issue10

Removes rule 210, per issue #10.
Rule 307: Repeal rule 303 (formerly 112).

To allow more nuanced and interesting forms of winning, rule 303 is repealed.