0.9.0 Release Candidate 1

Hello,

Is there some instructions on how to use 0.9.0 with MinGW and MSYS? Or a guide on how to migrate projects ?
I used to work with CB/MinGW but I don't know how to use the new method.. It's not unzip and run anymore...

Is MSYS2 mandatory or only useful to download/upgrade libs ?

Thanks for the help