swap lodash for lodash-amd & use only needed modules, add uniqueId to Entity
update examples to use lodash modules
update lodash to lodash-amd
update to lodash 2.1 for extra awesomeness - thanks @jdalton
update lodash to 2.3.0
add Entity spec and test for uniqueId
remove dojo/on for frozen-on, remove dojo/has for simpler support module