Add tab completion about evcxr HOT 3 CLOSED

I've added tab completion to the jupyter kernel (using rust-analyzer). The REPL still has history-based tab completion. @aminroosta or anyone else, do you have any opinion on the best way forward with the REPL? Should we switch it to just use rust-analyzer based completion, or is there value in the keeping the history-based completion? If we were to have both, do you think a config option to switch between them, or get results from both and merge them somehow?

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First, thanks for adding the rust-analyzer to jupyter kernel 👍 - I will definitely check that out.

As for the REPL, considering rust-analyzer completions are way smarter, i personally see little point in keeping history-based completion.

My guess is that most of those variable or function names, will also be suggested by rust-analyzer.

from evcxr.

Cool. I've just pushed a change to integrate it into the REPL. I'll probably do a release soon, but if anyone notices any problems with what's at HEAD, please do let me know.

I included function arguments in the tab completion. So the completion might look like slice_unchecked(begin, end). Not sure if having the (begin, end) there is good or not. Open to feedback. We can make it a config option if there's differing preferences.

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