2.0.0

• Backbone 1.x support (#96)
• add option to test from command line and run tests on Travis CI
• fix remove() not firing 'remove' event when last element of array is removed (#19)
• fix clear() and set nested attributes on changedAttributes() (thanks @isakb)
• 'change' events will no longer fire if new value matches the old
• fix attribute escape()ing