add support for composite keys in many to many relations
add untested changes to persistent-mysql
mysql:skip checking primary constraints as the syntax is incorrect anyway
postgres: look at current schema and database only when looking at columns
and constraints
change from persistmanykeys to persistlist
Merge branch 'master' of https://github.com/yesodweb/persistent into addcomposite
add Primary and Unique as tokens. Primary works similarly to Unique
remove the composite table attribute
change tests to use new Unique syntax
remove sqlmanykeys:fix composite bug
support for composite foreign and primary keys
minor fixes
cleanup and more tests
remove excess migration from compositetest
bugfix for postgres migration
compositetest cleanup
fix to handle changing fkeys
corrections plus retain compatiblity with original unique constraint syntax
merge with master
Merge pull request #174 from gbwey/addcomposite

Support composite keys for many to many tables