- correct source url

- update to version 3.11.2 (2017-01-12)
- Run tests with python 3.5 and 3.6. [geier]
- Allow tests failing with pypy3 on travis.ci. [geier]
- update to version 3.11.1 (2016-12-19)
- Encode error message before adding it to the stack of collected error
messages.
- update to version 3.11 (2016-11-18)
- Successfully test with pypy and pypy3. [gforcada]
- Minor documentation update. [tpltnt]
- update to version 3.10 (2016-05-26)
- Updated components description to better comply with RFC 5545. Refs #183.
[stlaz]
- Added PERIOD value type to date types. Also fixes incompatibilities
described in #184. Refs #189. [stlaz]
- Fix testsuite for use with dateutil>=2.5. Refs #195. [untitaker]
- Reintroduce cal.Component.is_broken that was removed with 3.9.2. Refs #185.
[geier]
- update to version 3.9.2 (2016-02-05)
- Defined test_suite in setup.py. Now tests can be run via python setup.py
test. [geier]
- Fixed cal.Component.from_ical() representing an unknown component as one of
the known. [stlaz]
- Fixed possible IndexError exception during parsing of an ical string. [stlaz]
- When doing a boolean test on icalendar.cal.Component, always return True.
Before it was returning False due to CaselessDict, if it didn’t contain any
items. [stlaz]
- Fixed date-time being recognized as date or time during parsing. Added
better error handling to parsing from ical strings. [stlaz]