drop namespace::clean, versionify _04
::DB stylistic cleanups

Start deprecating uppercase/mixed-case attribute names;
backwards-compat aliases via MooX::Aliases, for now

	modified:   lib/Bot/Cobalt/DB.pm
inherit from Exporter less often

	modified:   lib/Bot/Cobalt/Common.pm
	modified:   lib/Bot/Cobalt/Core/Sugar.pm
	modified:   lib/Bot/Cobalt/Frontend/RC.pm
	modified:   lib/Bot/Cobalt/Frontend/Utils.pm
	modified:   lib/Bot/Cobalt/Utils.pm