feature request: be able to cancel query that is already running

[herbertpimentel]

is not unnusual you write and run some query that may take long time running... So, will be good have an option to cancel it anytime until it still running/fetching/streaming

[herbertpimentel]

again... I saw wagon already does what I expect. But, UI needs give a glue it working at first time clicked maybe overlayer the card with with some opacity