snippet expansion needs a more general way of interaction
Interaction with UI finished on blackboard
some minor fixes
selection and selectors rewritten
operators rewritten
lots of fixes
interaction implemented, still lots of bugs
add file now :)
several bugfixes
readme update
readme
readme
some progress towards compound updateable
we probably fixed the updateable problem by not deepcopying action into
the undotree
some trivial tests added
travis added
typo
readme update
fix travis status
some operator tests added