3.0.9

• Set minimum libxml version to 2.7.0 in composer.json.
• #727: Added another workaround to make CalDAV work for Windows 10 clients.
• #805: It wasn't possible to create calendars that hold events, journals and
  todos using MySQL, because the components column was 1 byte too small.
• The zip release ships with sabre/vobject 3.5.1,
  sabre/http 4.2.1, sabre/event 2.0.2,
  sabre/uri 1.1.0 and sabre/xml 1.4.1.