Merge branch 'release/1.0.0'
Add changelog.
setup.cfg: Fix py.test options.

The only of the various output capturing options that seems to work
with Python 3.x is `--capture=sys`.  Other options fail with various
errors surrounding whatever py.test is monkey-patching over the
output.
Bump version to 1.0.1.
Merge branch 'hotfix/py-test-hack' into develop