Jacques Gaudin

Output widget's clear_output not clearing when using append_stdout

5

I stumbled upon a [question](https://stackoverflow.com/questions/58380894/ipywidgets-clear-output-does-not-work-the-second-time-its-used) on Stack Overflow where the first line printed in the output widget doesn't get cleared by the first call to `clear_output`. import ipywidgets as widgets...

This PR adds a setting ``MARKDOWNX_MARKDOWNIFY_WITH_REQUEST`` to make the request object available to the markdownify function. This can be used for example to sanitize the HTML output based on user...

The `updateHeight` method is called whenever the HTML preview is updated, ignoring the `MARKDOWNX_EDITOR_RESIZABLE` option. This PR fixes it by checking `_editorIsResizable` before calling `updateHeight`.