include tests in manifest
include the tests in the manifest for dist, and remove some outdated notes in
NOTES about the exported API (this is doc'd wayyy better in epydoc now).
fix MANIFEST.in, change version numbers to 0.9-doduo, fix LPGL notices
fixed MANIFEST.in to include the demo scripts, LICENSE, and ChangeLog.
upped everything to version 0.9-doduo.
fixed the copyright notice, and added the LGPL banner to the top of every
python file.