* 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
* Implemented basic functionality for using cache layer of LocalRefResolver
* Use `importlib` instead of `imp`, since it's been deprecated. Legacy `load_module()` reloads modules even if they are already imported, causing tests to fail when run in non-deterministic ordering, so we replace it with `import_module()`
Also moved is_valid_signature() into main package module, for
simplicity.
Also consolidated a handul of in-line pylint disable directives into the
.pylintrc config file.
In addition to the ERC20 codec, also:
Stopped ignoring type errors on 3rd party imports, by including
interface stubs for them;
Removed the unimplemented signature-utils module, which was just a
stand-in when the python project support was first put in place.
https://github.com/0xProject/0x-monorepo/pull/1144
