Replace references to .system
Add rb-inotify dependency
Fix import errors with unicode filenames
Add tests for imports with unicode filenames
Fix unicode errors on exceptions and logging
Use upside-down english for unicode text
Remove unnecessary encode
Bump diff-cover version
Cleaner tests
Utility functions for finding courses by id
Indicate that rb-inotify and rb-fsevent aren't actually necessary
Fix a bug in links on forum user profile pages

Previously, if a course id contained a '-' character, links from that
page to threads would lead to 404s.
LMS: resolves direct class name references to extends that have been converted to placeholder Sass syntax
Merge pull request #1003 from edx/gprice/fix-user-profile-links

Fix a bug in links on forum user profile pages
Update CHANGELOG.rst
Update CHANGELOG.rst
Improve retry logic for Stale Element Exceptions

Better exception retry logic

Change methods to lambdas
Merge pull request #1020 from edx/zoldak/acceptance-exception-handling

Zoldak/acceptance exception handling
Improve retry logic for Stale Element Exceptions

Better exception retry logic

Change methods to lambdas
Update changelong for due_date_display_format.