mbeliaev/req types

[beliaev-maksim]

finalize inline types migration. Remove stub file and go with python 3 inline style

closes #552

[codecov]

Codecov Report

Merging #537 (69f12e5) into master (04c9e15) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #537   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines         2534      2561   +27     
=========================================
+ Hits          2534      2561   +27     

Impacted Files	Coverage Δ
responses/__init__.py	100.00% <100.00%> (ø)
responses/matchers.py	100.00% <100.00%> (ø)
responses/tests/test_matchers.py	100.00% <100.00%> (ø)
responses/tests/test_responses.py	100.00% <100.00%> (ø)

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[beliaev-maksim]

@markstory
this was a real hell, still have to keep couple of type ignores.
I think we can handle ignores in another PR, if get a good idea how to fix them, for the moment I am lacking of ideas

also, can we ensure that #469 actually works and we do not get regression
I do not think we did any additional testing to check it

[markstory]

Should we have type aliases for this and Optional[Union[str, BaseResponse]]? They are both used a few times.

[beliaev-maksim]

good idea, I added them