[ENH] MrSEQLClassifier wrapper

[MatthewMiddlehurst]

What does this implement/fix? Explain your changes.

Start of a mrseql wrapper. Unfortunately, I can't quite find how to parameterise it currently after installing on Windows 🙂.

If anyone can find it in the source that that would be helpful: https://github.com/lnthach/Mr-SEQL

Does your contribution introduce a new dependency? If yes, which one?

mrseql