Documentation and ChangeLog update.

Updated Doxyfile.

Updated Changelog.txt and Release.txt for 0.9.alpha2 release.

Updated version number to 0.9.0.

Updated ReleaseNotes.txt.

Bumped version number to 0.8.1.

More release notes updates (fixed typos and bugs).

Updated Changelog.txt. Bumped version number to 0.7.4.

Marked some ComputeCommandQueue methods as deprecated. Updated Change…

…log.txt.

Updated documentation, bumped version number to 0.7.2