PyStackReg missing for Windows on conda

[LauLauThom]

Since (fb0f9a1), using the environnement.yml with Pystackreg as dependency to install imagepy with anaconda fails on windows because the package is only available for Linux on anaconda.

PackageNotFoundError: Packages missing in current channels:

  - pystackreg

[BioinfoTongLI]

For instance, you can ignore it by simply pip install pystackreg, and it should work.
But yes, you are right. For the late comers, It seems a win-based conda package would simplify everything.
For my knowledge, this pystackreg project is not on Github, but on bitbucket.
Maybe we should ask the pystackreg's maintainer to add a win-based release?

[LauLauThom]

I tested the pip installation on windows and it works, hence the pull request

[LauLauThom]

That could be an option too 👍