Everything so far

`method-list` (for adding breakpoints) isn't ready yet because `core-selector`  is buggy.
The plan is to put `method-list` and `object-tree` on the right side in separate tabs. But `paper-tabs` was  not being compliant with `vulanize`, so that's not done yet.

Requires `O.o()` to work.

Thank you
Any reason why you can't set addedProps[el] in the for loop below? The way it is, you are iterating over props twice, (apparently) for no reason. You can make it even better by checking if it is added (checkAdded) and continuing inside the "for" loop, instead of using the "props.filter" line above, reducing from three to one iteration over props.