* allow bytearrays for key/iv for symmetric encryption

* bump pypy/cffi requirements

* update docs, fix some tests

* old openssl is naught but pain

* revert a typo

* use trusty for old pypy

* better error msg again

* restore match

* Fixes #3460 -- deprecate OpenSSL 1.0.1

* We need to import warnings

* flake8

* words are hard

* rephrase

* test openssl 1.1.1

* let's see what a 1.1.1 pyopenssl does

* 1.1.1-pre8

* pre9

* docs and test more things

* 3.7 needs xenial

* remove freebsd11 builder

it's out of date, we can't update it, and it is unreliable

* we don't test against freebsd for now

* what did case sensitivity ever do for me

* don't assert on bsd since we don't test on for now

* test against python 3.7 for windows

* update docs to say we test on 3.7

* more succinct

* maybe make this actually work.

* link properly

* moar changes

I don't think it's relevant anymore

* expunge python 2.6

* how did THAT happen

* remove another unsupported python from the tox envlist

* hypothesis can now be unconditionally imported

* Declare that 2.1 is the last version to support Python 2.6

* It's the Final Countdown!