Fixed Tree_FileSystem.
Fixes Issue 217.
Merge branch '1.6'
Making sure we're not exceeding 80 characters per line
If no filters are passed, the implication is that the result is 'true'.
Merge branch '1.6'
Added caldav-sharing doc
Namespaces
Bumped version
spacess
Set release date
Small unittest fix
Merge branch '1.6'

Conflicts:
	ChangeLog
	lib/Sabre/CardDAV/Version.php
test and bugfix for google code issue #220 (Warning "Invalid argument supplied for foreach" in CalendarQueryValidator)
Added rfc5785 doc
Added a lot of timezone mappings for Microsoft Exhcange
Merge pull request #29 from PHPGangsta/Issue220

test and bugfix for google code issue #220 (Warning "Invalid argument su...
test and bugfix for google code issue #220 (Warning "Invalid argument supplied for foreach" in CalendarQueryValidator)
Very specific bug fix. Fixes Issue 220.
Merge branch '1.6'

Conflicts:
	ChangeLog
Correct casing to fix the travis build