Fossology

This is the first major version of the fossology python wrapper.

This version supports the fossology API up to version 1.1.1.
Some incompatibilities with former versions of the API could remain.

This library now uses `pytest` to perform the unit and integration tests (using the latest tag of Fossology Docker container).
The testsuite of this first major release covers 94% of the code.

The `download_report()` function now gets the name of the report generated by the Fossology server from the HTTP response header and returns both the report content, and the report filename. See [documentation]( https://fossology.github.io/fossology-python/report.html) for details.

This is a small but **breaking change** compared with the previous version, Fossology clients source code will need some **minor adaptation** if an upgrade is performed.

Add `wait_time` option to improve configurability depending on the size of the uploaded file.

Honour Retry-After header from GET uploads

* Add switch to support URL upload and document the different upload types: file, VCS and URL.
* Add upload `filesha1`
* Improve compatibility with future API objects by using keyword arguments
* Bug fix: remote use of Walrus operator to ensure compatibility with Python 3.6 and 3.7

* Add upload argument to method `list_jobs()`, closes 21
* Add options to wait for job completion in methods `schedule_jobs` and `detail_job()` as suggested in 20
* Update to REST API version 1.0.13:
* `DELETE /users/{id}`
* `GET /uploads/{id}/licenses`
* Add `ignoreScm` and `groupName` options for `POST /uploads`
* Add `groupName` option for `DELETE /uploads/{id}` and `PATCH /uploads/{id}`
* Breaking change: use Upload object instead of `upload_id` in method `upload_summary`
* Improve exception handling by sending raw server response in case no JSON is returned
* Fix implementation of specific agents handling, extend test
* Fix styling/formatting, shorten list of flake8 ignores
* Add test coverage in actions and export badge on README (using codecov)
* Improve coverage rate to 83%, fix some bugs on the way
* Extend copyright to 2020 on source files