#332 Ability to limit backup session in size/time

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Hi,
when I did initial backup it took too much time because of size (about 600 gb in home directory).
It is home computer and it usually switched off in the night :)
Backup process in UI shows progress bar but it impossible to estimate end-of-session time.

It will be nice too add option for time or size and for Areca to stop and commit correct backup after reaching limit, for example:
maximum work time: 8 hours
maximum backup volume: 100gb

I've seen temporary directory after canceled backups and Areca's prompt to continue the process, but complete session is better :)

Thank you!

Denis

P.S. such option will take users more control on backup process so they will do backup more often.