[Python-apps-team] backblaze-b2 is marked for autoremoval from testing

[Debian testing autoremoval watch]

backblaze-b2 1.3.6-1 is marked for autoremoval from testing on 2018-12-11

It (build-)depends on packages with these RC bugs:
912184: python-testfixtures: python-testfixtures FTBFS with python 3.7 as supported version