PostGreSQL: schema update: access models changes: - renamed roster to publisher-roster, as roster is in fact the pubsub service's roster, so it was badly used - added whitelist, publish-only - new non standard (yet?) self-publisher. It is planed to allow publisher to publish, update and delete only its own items - roster => publisher-roster renaming, and whitelist has been added to item access model too. publish-only and self-publisher don't make sense for items added "member" to affiliations (will be used for whitelist) news tables item_jids_authorized and item_languages. updated to version 2

v. 0.2 (02/12/2015):
	- schema updated (unversioned => version 1)
	- sync with Idavoll
	- use of sat.tmp.wokkel as a workaround for change not merged upstream
	- RSM (XEP-0059) implementation
	- MAM (XEP-0313) implementation
	- Namespace Delegation (XEP-0355) implementation
	- Privileged Entity (XEP-0356) implementation
	- removed remote-roster hack
	- SàT PubSub can be used as a PEP service (PEP implementation not complete yet)
	- item publisher is enforced
	- categories handling (not complete)

v 0.1.1 (09/09/2014):
    bugfix release

v 0.1.0 (24/02/2014):
    ** FIRST PUBLIC RELEASE **