Log Message:
py-notebook: updated to 5.5.0

5.5.0

New features:
The files list now shows file sizes
Add a quit button in the dashboard
Display hostname in the terminal when running remotely
Add slides exportation/download to the menu
Add any extra installed nbconvert exporters to the “Download as” menu
Editor: warning when overwriting a file that is modified on disk
Display a warning message if cookies are not enabled
Basic __version__ reporting for extensions
Add NotebookApp.terminals_enabled config option
Make buffer time between last modified on disk and last modified on last save \ 
configurable
Allow binding custom shortcuts for ‘close and halt’
Add description for ‘Trusted’ notification
Add settings['activity_sources']
Add an output_updated.OutputArea event

Fixing problems:
Fixes to improve web accessibility
Fixed color contrast issue in tree.less
Allow cancelling upload of large files
Don’t clear login cookie on requests without cookie
Don’t trash files on different device to home dir on Linux
Clear waiting asterisks when restarting kernel
Fix output prompt when execution_count missing
Make the ‘changed on disk’ dialog work when displayed twice
Fix going back to root directory with history in notebook list
Allow defining keyboard shortcuts for missing actions
Prevent default on pageup/pagedown when completer is active
Prevent default event handling on new terminal
ConfigManager should not write out default values found in the .d directory
Fix leak of iopub object in activity monitoring
Javascript lint in notebooklist.js
Some Javascript syntax fixes
Convert native for loop to Array.forEach()
Disable cache when downloading nbconvert output
Add missing digestmod arg to HMAC
Log OSErrors failing to create less-critical files during startup
Use powershell on Windows
API spec improvements, API handler improvements
Set notebook to dirty state after change to kernel metadata
Use CSP header to treat served files as belonging to a separate origin
Don’t install gettext into builtins
Add missing import _
Write notebook.json file atomically
Fix clicking with modifiers, page title updates
Upgrade jQuery to version 2.2
Upgrade xterm.js to 3.1.0
Upgrade moment.js to 2.19.3
Upgrade CodeMirror to 5.35
“Require” pyzmq>=17