'On motion that the House agree with an amendment' was not being treated like 'as amended', i.e. a ping pong vote
tidy vote action line parsing, split regex across multiple lines and sort the parts of the patterns
refactor parsing vote action lines

Merge similar regex patterns. Also fixes parsing:

    Submitted in the Senate, read twice, considered, and agreed to

which didn't quite match:

    Submitted in the Senate, considered, and agreed to
second-order ping-pong Senate votes were not parsed, and some first-order ping-pong votes because of a "the"

e.g.:

    Senate agreed to the House amendment to the Senate amendment
new bill relations parsed: causes X to be laid on the table, passed by virtue of, enrollment has been corrected by virtue of
when parsing committees out of action line text, avoid warnings in cases where it's clearly not a committee reference
improvements for my --diff command

Fast-path if output hasn't changed. Make my run script chmod'd executable.