Trustpilot

- bumps versions of dependencies:
- `python`: 3.7 → 3.8
- `click`: 7.1.1 → 8.0.1
- `requests`: 2.23.0 → 2.31.0
- `aiohttp`: 3.6.2 → 3.8.5

- bumps versions of development dependencies:
- `responses`: 0.10.12 → 0.23.2
- `mock`: 4.0.2 → 5.1.0
- `pytest`: 5.4.1 → 7.4.0
- `aioresponses`: 0.6.3 → 0.7.4
- `black`: 19.10b0 → 23.7.0

- username/passwrd are now optional
- dot-env support in cli
- `patch` command exposed in cli
- output format can now be `raw` or `json`, (default=json)

- reintroduce cli script

- create new patch version to fix travis

- update click to version 7.1.1 which renames the command `create_access_token` to `create-access-token`
- drop support for python 3.6
- drop deprecated `trustpilot.client.get_session` method. It is replaced by `trustpilot.client.default_session`
- drop deprecated `trustpilot.client.create_session` method. it is replaced by `trustpilot.client.default_session.setup`

- add shortcut to singleton async request_context_manager