Guess I will become an active developer, if just to push the H5 versions out the door

Apologies to Eric and/or Chuck if they still want to be listed as
maintainers.  Neither has done anything here for several years so I have
to figure that counts for something.
phpdoc
Move some unused functions from Horde to Horde_Deprecated
Move image generation related methods from Horde to Horde_Themes_Image