Add Resume Support #171
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Add Resume Support #171
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This PR adds the feature talked about in #61.
There are two new arguments
--taskfilewrites tasks to a file as they are created and completed--resumefromtakes the file made from the above and dispatches all the pending tasks left in the file. This mode resumes normal operation after dispatching tasks from the file (it also skips any tasks that have been completed already).As far as I can tell this does not introduce noticeable overhead to the execution. Everything is written in a blocking manner meaning the task does not actually get created until it gets written to the file, this should guarantee that all tasks are saved. In addition, if you specify a task file while resuming from another, it will copy over all completed tasks from the old file into the new at the start of execution so you should be able use them even if the program is interrupted after resuming from a task file already.
Let me know if there are any problems, or if I need to make any changes.