Update specs per Kristjan's excellent code review
Initial progress towards subtable filtering
Tweak records_in_batches to do yields itself rather than enumerable
Start actually using databases and begin pg db adapter
Get postgres db adapter able to update and delete records
Set up database filter_table method and start testing
gitignore vim swap files
First wiring of pg simple filter all of the way through
Get simple cascading filter spec to actually verify results
update style of postgres spec
Update database spec to match new style