Made all internal calls use the internally-defined API, rather than the (convenient) aliases.
Made s.union.
Made s.intersection.
Made s.difference.
Made s.symmetricDifference. Though... admittedly it's kind of hard to test this one with entities.
Allowed s.union,intersection,difference,symmetricDifference to accept queries as arguments, though I don't see it as overly useful.
Allowed s.union,intersection,difference,symmetricDifference to accept queries as arguments, though I don't see it as overly useful.
Made aliases s.not,minus -> s.difference.
Merge branch 'dev' of github.com:rosshadden/entropy into dev
Added s.reduce.
version++.