• [#264] Abort queued cell executions when an error occurs
  
• [#276] Added flag that tells if you’re in a kernel: getOption('jupyter.in_kernel', FALSE)
  
• [#272] Added Comm message support (for e.g. widgets)
  
• [#285] Isolate full HTML pages in iframes (also useful for widgets)
  
• [a7f91315d6ccf4c6e8d06d73cc770e21468b3488] Added the ability to use repr.plot_width/height between two plots in the same cell. (sorry for the messed up commit message)
  
• [3ff41c733aaba801823217135e5371fc934292eb] Added the jupyter.pager_classes option to control what to show in a pager (currently vignette() lists and help())
  
• [#293] Added a jupyter.logfile option and the environment variables JUPYTER_LOG_LEVEL and JUPYTER_LOGFILE
  
• [#324] Add our own quit()/… functions to a new environment so they survive workspace cleaning.
  
• [4d4193ff2a041650b24364ecee1493ce595e1b5c] Added a kernel.js with the custom key bindings Alt- (inserts <- ) and F1 (gives contextual help for the word under the cursor)
  
• [#406] Add support for .Last.value