Save results after X amount of time

[Difficult] Clock on the result; so often the DASK workers are working but are taking long or fail without giving you back any result. Be able to do keyboard interrupt and get result which have been calculate until now.

No file, test, or entry point is named; start by locating the code that submits work to Dask workers and collects results. Define how elapsed-time saving and keyboard interruption should behave, then verify that completed results are preserved when workers run too long or fail.

Written by the indexing model from the issue text.