(PDB-1025) Release 4.1.0

This patch updates the changelog for 4.1.0 (and for 4.0.0 which we missed) and
preps the module for a 4.1.0 release.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #152 from kbarber/ticket/master/pdb-1025-release-410

(PDB-1025) Release 4.1.0