* Remove duplicated dependencies
* Specify setuptools as the tool for generating distribution (PEP 517)
* Add `isort` to `dev_require`
* manage all dependencies in setup.py
* Execute `make pretty`
* Set usedevelop to true (revert previous change)
Update all tests to be compatible with requests-async
Cleanup testing client changes with black and isort
Remove Python 3.5 and other meta doc cleanup
rename pyproject and fix pep517 error
Add black config to tox.ini
Cleanup tests and remove aiohttp
tox.ini change for easier development commands
Remove aiohttp from changelog and requirements
Cleanup imports and Makefile
