Changes - added `sanitize` in [Text widget](https://runmercury.com/docs/input-widgets/text/) (#303) - added [PDF widget](https://runmercury.com/docs/output-widgets/pdf/) for displaying PDF in Python notebooks
2.3.7
Fix problem with `NaN`s in `Select` and `MultiSelect` widgets (382).
2.3.6
The frontend wasn't packed correctly in the previous release (2.3.5). This release fixes it.