Merge branch 'master' into alex-patch-1

.azure-pipelines/wheel-builder.yml

.jenkins/Jenkinsfile-wheel-builder

.travis.yml

.travis/install.sh

.travis/run.sh

Jenkinsfile

MANIFEST.in

README.rst

azure-pipelines.yml

pyproject.toml

release.py

setup.cfg

setup.py

src/_csrc/blf.c

src/_csrc/blf.h

src/_csrc/portable_endian.h

src/bcrypt/__about__.py

src/bcrypt/__init__.py

tasks.py

tests/test_bcrypt.py