Merge pull request
#4542 from ivanov/history-clear...
Merge pull request
#4542 from ivanov/history-clear
new `ipython history clear` subcommand
This new subcommand is equivalent to ipython history trim --HistoryTrim.keep=0, which is now supported (and also has a more convenient --keep alias)
This command comes with a fix to bash completion of flags for ipython history subcmd
also included is a tiny fix for nbconvert completion that was pointed out by @jakobgager in
#4528
also included is a change to our utils.io.ask_yes_no function that allows for specifying the behavior of a KeyboardInterrupt.