* Refine Order for Web3 compat. & add conversions
Changed some of the fields in the Order class so that it can be passed
to our contracts via Web3.
Added conversion utilities so that an Order can be easily converted to
and from a JSON-compatible dict (specifically by encoding/decoding the
`bytes` fields), to facilitate validation against the JSON schema.
Also modified JSON order schema to accept integers in addition to
stringified integers.
* Fixes for json_schemas
Has-types indicator file, py.typed, was not being included in package.
Schemas were not being properly gathered into package installation.
* Add test/demo of Exchange.getOrderInfo()
* web3 bug workaround
* Fix problem packaging contract artifacts
* Move contract addresses to their own package
* Move contract artifacts to their own package
* Add scripts to install, test & lint all components
* prettierignore files in local python dev env
* Correct missing coverage analysis for sra_client
* CI cache lint: don't save, re-use from test-python
* tag hacks as hacks
* correct merge mistake
* remove local strip_0x() in favor of eth_utils
* remove json schemas from old order_utils location
* correct merge mistake
* doctest json schemas via command-line, not code
* Code generation scripts
* Generated code
* Change test config to hit 0x-launch-kit
* Ran prettier on generated code
* First test case, of get_asset_pairs()
* Use launch kit docker image to faciliate CI tests
* Fix markdown rendering for GitHub and PyPI
* Add URL for PyPI to link back to GitHub
* Add one-line package description to README.md
* Remove git_push.sh
* Remove unimplemented tests
* Add sra_client to top-level README package list
* Remove repeated-everywhere long description
* Add shorcuts for publishing
* Remove TypeScript examples
* Introduce framework for running basic tests for entities
* Add pipeline tests to CircleCI config
* Make pipeline tests more configurable and fix CircleCI config
* Add coverage dir to pipeline package
* Add basic tests for all exchange event entities
* Add tests for remaining entities
* Create separate test scripts in package.json and add new info to README
* Update db_setup.ts to revert migrations even if you are using docker
* Automatically pull the postgres image if needed
* Add comment about why NumberToBigIntTransformer is needed
