19.0.0
Hypothetically fixes pyOpenSSL tests (#805)
Delete rand.py (#675)
Don't zero memory when we don't have to. (#578)
add key types consts (#776)
Add an informative __main__.py (#620)
restore a subset of the rand module (#708)
Fixes #655 -- deprecate OpenSSL.tsafe (#673)
release 19.0.0 (#808)