public / sequelize

Sequelize.ENUM: Values as arguments / array

Added tests for both field: Sequelize.ENUM and field: { type: Sequelize.ENUM }

Fix for #1234 - Postgres query should set on .dataValues instead of object

Validation skipping logic was inverted. Fixed #1169

better check if 'IS NOT' or '!=' should be used

Conflicts:
	bin/sequelize

Tests/Fixes for undoing migrations.

Fix/Tests for #1218

Now passing instances to hooks