- Update to 0.9.6:
* Correctly order calendar properties before calendar components (#98)
* Correctly serialize timestamp values (i.e. REV) (#99)
* Pass correct formatting string to logger (#102) - thanks @CruzR!
* RRULE: Fix floating UNTIL with dateutil > 2.6.1 (#115) - thanks @Unrud!
* Encode params if necessary in serialization (#109) - thanks @matthias-k!
* Ignore escaped semi-colons in UNTIL value (#114) - thanks @Unrud!
* RRULE: Fix VTODO without DTSTART (#116) - thanks @Unrud!
* Fixed regexp for VCF Version 2.1 (#121) - thanks @farmovit!
* repr changed for datetime.timedelta in python 3.7 (#122) - thanks @sharkcz!