Antidote CRDT upgrade

This release includes some incompatibilities caused by changes in Antidote.

• Removed integer CRDT

  Some uses can be replaced by a counter, multi-value-register, or last-writer-wins -- depending on your use case. If you need the full functionality of the integer, you will have to use a counter together with a multi-value-register

• Removed add-wins map

  You can replace it with the remove-resets-map (rrmap) in your code. The only difference is, that it was possible to delete non-resettable CRDTs from an add-wins-map and that the add-wins map could distinguish between empty entries (e.g. empty set) and nonexisting entries

• Added support for flag CRDTs