Start adding tests
Add tests for indexed key access
Add an IndexedValuesView
Add an IndexedItemsView
Allow looking up the index of a key
reprlib is not available in Python 2
Use two newlines between classes
Test and fix item removal
Test iteration
Provide itemsview, keysview and valuesview
Fix reprlib backport usage
Add tests for reversed iteration
Add failing tests for clear
Fix clearing
Add tests for and fix popitem
Add tests for and fix move to end
Add tests for pop
Add tests for set default
Forgot to commit backports.py
Add tests for repr