SMLDiff and SMLEntry to match dashcore 0.13.0-rc9

Feature/v13 sml changes (#101)

* Add changes to SMLEntries from the latest core version

* Fix SMLEntry.fromBuffer method

* Fix ip serialization and tests

* Add more tests

* Reverse byte order in hash in tests

* Update SMLDiff test with a new diff

* Fix SMLDiff, coinbase payload and ip serializer

* Bump module version

* Update
Fix typo in `deterministicmnlist` dir name