3.1.0

• add compatibility with Mathematica 10.1
• fix CMake 3.2 compatibility issues
• require at least CMake 2.8.12
• remove obsolete code required for CMake versions older than 2.8.12
• prefer modern executable names (i.e., wolfram.exe) over classic ones (i.e., math.exe)
• add parameter LINK_MODE to some functions (see manual)
• manual updates