Github user newkek commented on the issue:
https://github.com/apache/tinkerpop/pull/923
The reason this is targeting master is because although I did not break
backward compatibility and put previous outdated methods as Deprecated I wasn't
sure what the strategy is here for retiring things in patch versions. Also
there would be a slight change of behavior if anybody were to have also
extended `AbstractGraphSON2MessageSerializer`. Let me know if that's acceptable
to put in a patch or not, if so I don't any other reason not to do it in tp33.
---
