Graph-notebook

**openCypher Support**:

With the release of support for the openCypher query language in Amazon Neptune's lab mode, graph-notebook can now be used to execute and visualize openCypher queries with any compatible graph database.

Two new magic commands have been added:

- `%%oc`/`%%opencypher`
- `%%oc_status`/`%%opencypher_status`

These openCypher magic commands inherit the majority of the query and visualization customization features that are already available in the Gremlin and SPARQL magics.

For more detailed information and examples of how you can execute and visualize openCypher queries through graph-notebook, please refer to the new `Air-Routes-openCypher` and `EPL-openCypher` sample notebooks.

([Link to PR](https://github.com/aws/graph-notebook/pull/153))

**Other major updates**:

- Added visualization support for elementMap Gremlin step ([Link to PR](https://github.com/aws/graph-notebook/pull/140))
- Added support for additional customization of edge node labels in Gremlin ([Link to PR](https://github.com/aws/graph-notebook/pull/132))
- Refactored %load form display code for flexibility; fixes some descriptions being cut off
- Updated Neptune ML notebooks, utils, and pretrained models config ([Link to PR](https://github.com/aws/graph-notebook/pull/153))
- Added support for `modeltransform` commands in `%neptune_ml` ([Link to PR](https://github.com/aws/graph-notebook/pull/153))
- Overhauled Gremlin visualization notebooks with example usage of new customization options and elementMap step ([Link to PR](https://github.com/aws/graph-notebook/pull/153))
- Added new notebook to explain Identity Graph data modeling ([Link to PR](https://github.com/aws/graph-notebook/pull/154))

**Minor updates**:

- Included index operations metrics in metadata results tab for Gremlin Profile queries([Link to PR](https://github.com/aws/graph-notebook/pull/150))
- Updated SPARQL EPL seed dataset file ([Link to PR](https://github.com/aws/graph-notebook/pull/134))
- Updated documentation on using `%%graph_notebook_config` with an IAM enabled Neptune cluster ([Link to PR](https://github.com/aws/graph-notebook/pull/136))

**Bugfixes**:

- Fixed improper handling of Blazegraph status response ([Link to PR](https://github.com/aws/graph-notebook/pull/137))
- Fixed Gremlin node tooltips being displayed incorrectly ([Link to PR](https://github.com/aws/graph-notebook/pull/139))
- Fixed bug in using Gremlin explain/profile with large result sets ([Link to PR](https://github.com/aws/graph-notebook/pull/141))
- Pinned RDFLib version ([Link to PR](https://github.com/aws/graph-notebook/pull/151))

- Added support for additional customization of graph node labels in Gremlin ([Link to PR](https://github.com/aws/graph-notebook/pull/127))

- Added support for dictionary value access in variable injection([Link to PR](https://github.com/aws/graph-notebook/pull/126))

- Pinned gremlinpython to `<3.5.*` ([Link to PR](https://github.com/aws/graph-notebook/pull/123))
- Added support for notebook variables in Sparql/Gremlin magic queries ([Link to PR](https://github.com/aws/graph-notebook/pull/113))
- Added support for grouping by different properties per label in Gremlin ([Link to PR](https://github.com/aws/graph-notebook/pull/115))
- Fixed missing Boto3 dependency in setup.py ([Link to PR](https://github.com/aws/graph-notebook/pull/118))
- Updated %load execution time to HH:MM:SS format if over a minute ([Link to PR](https://github.com/aws/graph-notebook/pull/121))

- Fixed bug in `%neptune_ml export ...` logic where the iam setting for the exporter endpoint wasn't getting picked up properly

- Added support for Mode, queueRequest, and Dependencies parameters when running %load command ([Link to PR](https://github.com/aws/graph-notebook/pull/91))
- Added support for list and dict as map keys in Python Gremlin ([Link to PR](https://github.com/aws/graph-notebook/pull/100))
- Refactored modules that call to Neptune or other SPARQL/Gremlin endpoints to use a unified client object ([Link to PR](https://github.com/aws/graph-notebook/pull/104))
- Added an additional notebook under [02-Visualization](src/graph_notebook/notebooks/02-Visualization) demonstrating how to use the visualzation grouping and coloring options in Gremlin. ([Link to PR](https://github.com/aws/graph-notebook/pull/107))
- Added metadata output tab for magic queries ([Link to PR](https://github.com/aws/graph-notebook/pull/108))