- progress use new API, and signals to monitor progression and avoid use of progressGet before progress is actually started
- progress behaviour on event is managed by callbacks which are Jp attributes
- progress with unknown or 0 size don't show the progress bar
- better handling of errors
- CommandAnswering is update to manage actions instead of the deprecated askConfirmation
- managed actions use callback easy to associate with an action type.
- file command is updated to manage these changes and the recent changes in backend behaviour
- verbosity is used to display more or less message when sending/receiving a file
- destination path can be specified in file receive
- file receive doesn't stop yet, still need some work in the backend
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