Add fixtures and nicer tests
List.get() is now always returning a array
Add "private" attribute item._values
Update getByClass with new argument order
Change sort function to javve/natural-sort.
Obs. asc&desc bugs right now
Updated sort function to be more readable
Added tests for search and filter
Beginning of 'on'-tests
Added tests for show()
Updated search tests
Updated filter tests
Include all current tests in test/index.html