CHANGES.rst: add release notes for 1.0.0

CHANGES.rst: add release notes for 1.0.0rc1

CHANGES.rst: add version 0.3.8 changes

CHANGES.rst: add release notes for version 0.3.7

CHANGES.rst: add release notes for 0.3.6

setup.py: version bump to 0.3.5

Also update docs.

setup.py: version bump to 0.3.4

Bump version to 0.3.4 in setup.py and sphinx.

setup.py: version bump to 0.3.3

Bump version to 0.3.3 in setup.py and sphinx.

setup.py: bump version to 3.0.1

Also update sphinx documentation.

setup.py: version bump to 0.3.0

Bump version to 0.3.0 as there are backward incompatible
changes in this release.