fixed NPE on cut in empty file
do not allow to completely remove cells from notebook
fixed switching between cell types
do not resize cells on re-add first cell to the file
don't add default storage — PersistenceComponent must specify all used storages, so, we must not add another one
cleanup
remove InvalidComponentDataException
cleanup
cleanup
it's time to remove ComponentRoamingManager
RestoreUpdateTree cleanup
added commons-io to the ipnb
default values for nbformat and metadata in raw ipython file
cleanup, add class name to exception message
add first cell if ipynb file is empty
Merge remote-tracking branch 'origin/master'
EA-56284 (diagnostic)
IDEA-130994 Settings: Editor | Colors & Fonts | Diff — cosmetic issues
EA-54384 (append .jar separator if missing)
IDEA-129339: show tracked branches in general "remote/..." groups