Daniel Black

Hello! I keep getting the following warning when launching `750words`: ``` DeprecationWarning: The SafeConfigParser class has been renamed to ConfigParser in Python 3.2. This alias will be removed in future...

Layout is broken with 1.9.2

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### Step 1: Provide a summary of your problem Specifying a `main-vertical` layout with a `main-pane-width` attribute, or not, results in a main pane rendered with a width of 1...

'NoneType' object has no attribute 'startswith'

1

## Description I receive the error mentioned in part of #336 wherein when the user runs "Edit > Apply Black Formatter", an error dialogue pops up:  alt: "Jupyterlab Code...