removal of legacy "returns" blcoks with next gtk-doc release
for legacy reasons gtk-doc accepted documenting the return value by
starting a line with "Returns" (not Returns:") . This of course can
be ambiguous and thus is not recommended. Normally one can disambiguate,
by having a proper Returns: block. Still this can cause trouble for void
My proposal is that project check their docs and fix these. I will
remove legacy support in git in the coming days and that will be in the
next gtk-doc release then (1.19 - no eta yet).