Help needed with some maintenance tasks

[tkralphs]

Hi all, many of you have been waiting for a new Clp/Cbc release and I would like to thank you for your patience. There is a draft PR open (#166) that I could use some help in finishing. What's left to do doesn't require any knowledge of Clp's inner workings. All the details are described in the PR, but in short summary, what remains at a minimum is

• some debugging (there are still probably a few surface-level bugs hanging around that I haven't had time to track down) and
• some thorough testing to make sure there are no performance regressions.

I would also really like to create a minimal ClpSolver class, rename ClpMain1() and move it into that class, make ClpMain0() the default constructor of the ClpParameters class, and finally break up the while loop into some smaller pieces so we can reformat the code.

None of this would change any functionality and shouldn't take much time. The heavy lifting is done (there are some nice-to-have things listed in the PR that are a little more difficult, but we could push those off to another release if needed). Let me know if you have some bandwidth to pitch in. The best way to contribute would probably be to create additional PRs based off the refactor branch.