Allow noop to be used as an extract function, as well as an add function

Added date to change log

update rpm and deb changelogs

minor doc adjustments for linking to apt instructions

forgot wee_import in rpm app list

update changelog for 3.5.0 release

include wee_debug in the rpm manifest

Version 3.3.1

Version 3.3.0

Now sets WEEWX_ROOT to a normative path (avoids trailing slash)