some changes
Conflicts working with single recurrence events
handle conflicts between single recurrence and multiple recurrence events with durations
remove puts statements
changed back to original
some comments
calculate last time once
Unable to reproduce outside of rails project, sometime occurring_at receives datetime instead of time
Use TimeUtil.serialize_time for end_time.
Making sure intervals greater than 1 will start from the start date of the schedule.
Allows customization of the #to_s date format used by Schedule#to_s.
Merge pull request #97 from jonhyman/feature/set_to_s_format

Allows customization of the #to_s date format used by Schedule#to_s.
Bump version to 0.8.1
use UNTIL instead of DTEND to determine last instance of recurrence; fixes #99
Merge pull request #85 from StudioMelipone/master

Use TimeUtil.serialize_time for end_time.
Merge pull request #100 from reedlaw/end_time

use UNTIL instead of DTEND to determine last instance of recurrence; fixes #99
Remove end_time from `#to_s` on IceCube::Schedule

[#99]
Remove deprecated tests
Update CHANGELOG
Merge pull request #71 from mrloop/master

Single recurrence and recurrences with duration conflict detection