limiting subscriptions based on board id
factor out majority of board template so current board doesn't need to be recomputed
fix captured pieces panel
by default, don't retrieve captured pieces
don't forget to display the captured pieces
client needs access to all user's boards to determine turn count
use a real table for position history instead of embedded document
a pawn moving two places has two potential blockers
migrate embedded positions to positions table
fix zach's broken board
remove one off migration
fix bugs with pawn moves and repair broken production board
Merge pull request #5 from sslotsky/performance

Performance