pre-release changes

pre-release changes.

release description files

addition of coMD logo

changes in the coMD logo
bbenm will be available in next release
c codes for bbenm method are commented out.

final bug fix before release

Fixed docs alignment in release notes [skip ci].

Pre-release commits.

Refined slicing.

Final changes before release v1.4.9

Doc revisions, version increment, testfile added.