Merge pull request #15 from amalloy/master

Make log-prettifier handle players with $ in their name
Option to drop or keep games added to history
Merge branch 'master' of https://www.github.com/aiannacc/goko-dominion-tools
Make turn headers into clickable links.

Like line numbers in github diffs: you can click on a turn header,
and your browser's location bar becomes a link you can paste to
someone else (eg, forum topics like 'Best moments of 2014')