Itential.py

Changing how modules are used, which is a breaking change.

Added
- Retry with backoff feature added to the main api call function. Args in the Itential class to edit Retry params.
Retries on status codes: 408, 409, 429, 500, 502, 503, 504
- Auto-re-auth to main api call function when the response is a 401 or 403.

Updated
- Readme.md is now more clear with a bit more instructions
- Modules are now imported via the version folder (same as before), but now you must instantiate the class and pass in the client Itential object, generating an instance.

Fixed
- Issue where a requests call wasn't set to skip ssl validation
- Minor spelling and grammar issues

Updated
- pyproject.toml with a [dependencies] section for deployment

Added
- Completed (sans tests) the app_workflow_engine endpoints for version 2020.2.x
- Completed (sans tests) the adapter_automation_gateway endpoints for version 2020.2.x

Updated
- Updated the requirements file.
- pyproject.toml with configs for publishing to pypi (and then published to pypi)

Added
- LICENSE file
- pyproject.toml file
- requirements file (placeholder only)
- setup.py file (placeholder only)
- CHANGELOG (pre-usage of branches to consolidate changes in the changelog)
- .github/pull_request_template.md placeholder
- docs/pull_request_template.md placeholder

Initial commit