Many-many association eager loading support for MySQL
Many-many association eager loading support for PGSQL
Many-many association eager loading support for SQLite
Altered join type classification method
Added test for eager-loading many-many associations
Fixed has-many associations to have foreignIdentifier in both directions
PGSQL query template sharing
Merge branch 'eagermany' of https://github.com/lemon-tree/sequelize into lemon-tree-eagermany
Merge branch 'lemon-tree-eagermany'