Register input with keyboard manager, fixes #6426
Destroy backbone model on comm:close
simplification of trigger destroy
Warnings if there is a bias in timings due to some side-effects of the method
Clear prompt numbers in clearoutput preprocessor
Trim anchor link in heading cells, fixes #6324
Include "worst timings" from the tuning to find number of runs
FIX: Zero Division Error
stop listening
Better and more explicit warning message
Merge pull request #6438 from SylvainCorlay/model_destroy_message

Destroy backbone model on comm:close
Merge pull request #6483 from jhamrick/fix-heading-anchors

Trim anchor link in heading cells, fixes #6324
Set prompt number to None
Use cell.prompt_number rather than cell['prompt_number']
Merge pull request #6482 from jhamrick/clear-prompt-numbers

Clear prompt numbers in ClearOutput preprocessor
Add a small line to whatsnew.rst
Merge pull request #6479 from MechCoder/timeit_warning

Warnings if there is a bias in timings due to some side-effects of the method
Merge pull request #6431 from jhamrick/input_ui_focus

Register input with keyboard manager