v0.16.9

Bug fixes

• Learner is not notified of mastery level, exercises keep displaying #4875
• Test improvements: Avoid test failure due to race condition #5252
• Activating simplified login results in blank login modal #5255

Known issues

• Windows installer tray application option "Run on start" does not work see
  learningequality/ka-lite-installers#106
• Writing to server.log is disabled on Windows #5057
• Installing on Windows 8, 32bit is reported to take ~1 hour before eventually finishing.
• If you are upgrading from 0.15 on a Windows system, you have to manually locate
  python-packages\requests, typically in
  C:\Python27\share\kalite\python-packages\requests and delete it (after
  completing the installation process). Otherwise video download breaks.
  #5263

Paper cuts

• Old versions of pip installer breaks because of requests library downgrade. #5264
• Exercise "Measure area with unit squares" is broken #5130
• VTT Subtitles are broken in Epiphany browser #5125
• Viewing subtitles on Ubuntu requires ubuntu-restricted-extras #4993
• Individual Student Progress Report may take a long time to load #5106
• Button "Show Keypad" may be missing on some exercises due to upstream data API issue #5103