Log Message:
py-requests-mock: updated to 1.9.0

1.9.0
=====

New Features
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- Add python type hints for python 3.

Bug Fixes
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- Issue 144 - When performing a read we handled an empty byte return as an \ 
indication to close the file pointer. This is not true when you actually ask for \ 
a zero byte read so we should allow it.

- Fix: When you have a non url-safe character in your URL it is quoted by \ 
requests however requests-mock just treated it as a normal string.