ELPA submission: drepl (REPL protocol)

[Augusto Stoffel]

Hi again,

I would like to submit the following package to ELPA:

  https://github.com/astoff/drepl

It provides alternative shells for the Python and Lua languages.  More
importantly, however, it defines a framework and a protocol to create
new REPLs which hopefully helps doing some things which are tricky in
Comint (especially completion and multi-line editing).

This is kind of an experiment at this point, but I would like to make it
public and see what people think.