This project uses a new Tri-License Choice MIT/L-GPL/MS-PL. As such, you have a choice of choosing MIT, L-GPL v2 or v3, or MS-PL. Or you can choose to use the tri-license and let others have their choice. While using this tri-license, MIT will be used in regards to the code, and L-GPL v2 for patents (so algorithms remain open source). Only when MS-PL is chosen, does it apply (dropping MIT and L-GPL).