Graphistry

Added

* Docs: ARCHITECTURE.md and CONTRIBUTE.md

Changed
* Quieted memoization fail warning
* CI: Removed TravisCI in favor of GHA
* CD: GHA now handles PyPI publish on tag push
* Docs: Readme install clarifies Python 3.6+
* Docs: Update DEVELOP.md dev flow

Added

* Friendlier error message for calling .cypher(...) without setting BOLT auth/driver (https://github.com/graphistry/pygraphistry/issues/204)
* CI: Run containerized neo4j connector tests
* Infrastructure: Set Python 3.9 support metadata

Fixed

* Memoization: When memoize hashes throw exceptions, emit warning and fallback to unmemoized (b7a25c74e)

Added

* Friendlier error message for api=1, 2 server non-json responses (https://github.com/graphistry/pygraphistry/pull/187)
* CI: Moved to GitHub Actions for CI + optional manual publish
* CI: Added Python 3.9 to test matrix
* Infrastructure: Upgraded Versioneer to 0.19
* Infrastructure: Fewer warnings and enforce flake8 CI checks

Breaking 🔥

* None known; many small changes to fix warnings so version bump out of caution

Added
* File API: Enable via `.plot(as_files=True)`. By default, auto-skips file re-uploads (disable via `.plot(memoize=False)`) for tables with same hash as those already uploaded in the same session. Use with `.register(api=3)` clients on Graphistry `2.34`+ servers. More details at (https://github.com/graphistry/pygraphistry/pull/195) .
* Dev: More docs and logging as part of https://github.com/graphistry/pygraphistry/pull/195
* Auth service account docs in README.md (12.2.2020)

Added
* Examples for icons, badges, and new node/edge bindings
* graph-app-kit links
* Slack link

Fixed
* Python test matrix: Removed 3.9
* Propagate misformatted etl1/2 server errors

Breaking 🔥
* Warnings: Standardizing on Python's warnings.warn

Fixed
* Neo4j: Improve handling of empty query results (https://github.com/graphistry/pygraphistry/issues/178)

Added
* Icons: Add new as_text, blend_mode, border, and style options (Graphistry 2.32+)
* Badges: Add new badge encodings (Graphistry 2.32.+)
* Python 3.8, 3.9 in test matrix
* New binding shortcuts `g.nodes(df, col)` and `g.nodes(df, src_col, dst_col)`

Changed
* Python 2.7: Removed __future__ (Python 2.7 has already been EOL so not breaking)
* Redid ipython detection
* Imports: Refactoring for more expected style
* Testing: Fixed most warnings in preperation for treating them as errors
* Testing: Integration tests against self-contained neo4j instance