Compile to es5 instead of es3.
Remove dependency on underscore.js.
Replace underscore templates with Handlebars.
Remove dependency on underscore.js in tests.
Use keys() and forEach() instead of for...in.
Extract trigger method regex.
Collection skeletal.
Basic collection funtionality.
Add toJSON() and fix _addReference().
Add Collection to tbone.
Fix Collection.toJSON().
Remove reference between collection and model - use generics in Collection.
Add at().
Add tests for add().
Add tests for at().
Add tests for toJSON().
Add tests for remove().
Refactor tests.
wip