Github user spmallette commented on the issue:
https://github.com/apache/tinkerpop/pull/351
Note that travis isn't happy - tests are failing:
```text
Failed tests:
GraphSONMessageSerializerV2d0Test.shouldSerializeToJsonIteratorNullElement:147
expected:<[x]> but was:<[]>
GraphSONMessageSerializerV2d0Test.shouldSerializeToJsonMap:171
expected:<[x]> but was:<[]>
GraphSONMessageSerializerV2d0Test.shouldSerializeToJsonIterable:107
expected:<[x]> but was:<[]>
GraphSONMessageSerializerV2d0Test.shouldSerializeToJsonIterator:126
expected:<[x]> but was:<[]>
```
Also - some documentation odds and ends:
* Please update CHANGELOG with an entry for "Introduced GraphSON 2.0".
* We probably need o include some reference documentation
[here](https://github.com/apache/tinkerpop/blob/5395aaeb057e4c163233aa8ace2a2975ea827fe5/docs/src/reference/the-graph.asciidoc#graphson-readerwriter)
- not sure what that should look like at the moment. We default to 1.0 still
for now, so we probably don't need to change too much. Perhaps we need a
section that shows what 2.0 format looks like and how to generate it? Maybe
that is enough?
* We need upgrade docs for users so they are aware of this new feature -
[here](https://github.com/apache/tinkerpop/blob/5395aaeb057e4c163233aa8ace2a2975ea827fe5/docs/src/upgrade/release-3.2.x-incubating.asciidoc#upgrading-for-users)
* We need upgrade docs for driver devs (need to add a section - no changes
in 3.2.1 have affected drivers yet) so they are aware of how they might benefit
from this change -
[here](https://github.com/apache/tinkerpop/blob/5395aaeb057e4c163233aa8ace2a2975ea827fe5/docs/src/upgrade/release-3.2.x-incubating.asciidoc#upgrading-for-providers)
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