<commit_before># Unreleased

- Bug Fix: Unnecessary constraints were not being removed
  https://github.com/PyconUK/ConferenceScheduler/pull/61

# v1.1.0, 2017-05-06

- Addition: Added the ability to pass different solver engines to the scheduler
  https://github.com/PyconUK/ConferenceScheduler/pull/57

- Enhancement: Added a more efficient summation function
  https://github.com/PyconUK/ConferenceScheduler/pull/55

- Enhancement: Removed the creation of unecessary constraints
  https://github.com/PyconUK/ConferenceScheduler/pull/54

- Enhancement: Altered the treatment of duration within constraints
  https://github.com/PyconUK/ConferenceScheduler/pull/53

- Bug Fix: Lack of package traversal in setup.py
  https://github.com/PyconUK/ConferenceScheduler/pull/52
<commit_msg>Update changes.md<commit_after># Unreleased

- New Feature: Differences between schedules
  https://github.com/PyconUK/ConferenceScheduler/pull/63

- Bug Fix: Unnecessary constraints were not being removed
  https://github.com/PyconUK/ConferenceScheduler/pull/61

# v1.1.0, 2017-05-06

- New Feature: Added the ability to pass different solver engines to the scheduler
  https://github.com/PyconUK/ConferenceScheduler/pull/57

- Enhancement: Added a more efficient summation function
  https://github.com/PyconUK/ConferenceScheduler/pull/55

- Enhancement: Removed the creation of unecessary constraints
  https://github.com/PyconUK/ConferenceScheduler/pull/54

- Enhancement: Altered the treatment of duration within constraints
  https://github.com/PyconUK/ConferenceScheduler/pull/53

- Bug Fix: Lack of package traversal in setup.py
  https://github.com/PyconUK/ConferenceScheduler/pull/52

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