Merge pull request #1058 from Cadair/master

Fix regressions in aiaprep merge
First draft of a RELEASE announcement.
Release announcement and mailmap changes.
Update changelog
bump version number in setup.py
Merge pull request #1059 from Cadair/0.5

0.5
Fixes to setup.py
Add top level docs in sdist
More mailmap changes to clean up shortlog.
Add sqlalchemy to the travis build!
Merge pull request #1061 from Cadair/0.5

0.5