caldav: calculate if any events were in range after exceptions
imapoptions, http_caldav.c: added calendar_user_address_set option for address lookup
http_caldav.c: don't declare rscale_cmp() unless we have RSCALE support
http_caldav: need to compare "mailto:" case-insensitively
http_caldav.c: more detailed error description when returning 403 in caldav_put()
http_caldav.c: properly set To/From addresses in imip_send() based on component type and method
http_caldav.c: need to initialize 'ret'
http_caldav.c: if an invite is receives via email, the resource won't exist on server when the client first tries to reply (was this check added for CalDAVTester?)
http_caldav.c: log scheduling ACL issues at debug level
http_caldav.c: per draft-daboo-icalendar-rscale-04 we prefer RSCALE values to be uppercase
jcal.c: must use a JSON array for multiple values in a BY* RRULE part
specs.html: updated drafts that have become RFCs. added specs for recently added functionality
meth_acl: don't crash if no children
http_caldav.c, http_ischedule.c: allow an empty LOCATION property even if libical is compiled to signal an error
http_caldav: only allow calendar-availability to be set on scheduling Inbox
httpd.c, http_caldav.c: add support for Apple CS:calendar-availability and DAV:inbox-availability
vzic-output.c: the RRULE generation code is broken in some way.  increasing the min number os occurrences seems to fix a lot of problems
http_dav: keep the DB open by exploiting refcount
http_dav.c: fix line-wrapped comment
DAV: owner gets implicit ACL reading rights