2.3.0

Enhancements

• #263 better error message if notebook not found
• #273 display Mercury version on local server start
• #274 set custom domain for Site in database
• #276 nicer display of output files for download
• #278 allow widgets in the loop
• #290 add NumberBox widget

Bug fixes

• #246 fix share button on Safari web browser
• #265 set allowed Python versions 3.8-3.11
• #277 fix show prompt in Safari
• #275 fix private notebook display when stored on S3
• #282 fix output files for download