Added set
Added set specs
Added sketch of join
Added L.merge as _.extend (for now)
Added first cut at of join
Added selectKeys
Added selectKeys
Added selectKeys
Added first cut at of join, almost works
Mutation sucks. Working L.$.join
Name change to naturalJoin
selectKeys and merge specs
Cleaner merge
L.$.toSet
Bumped version number
Bumped version number
Bumped version number