CMake 3.12 required

[jheaff1]

Hi,

The FSeam repo uses the find_package(Python3) functionality of CMake:

https://cmake.org/cmake/help/v3.12/module/FindPython.html

This was introduced into CMake in v3.12, whereas your documentation states that 3.10 is required.

Perhaps your documentation should be updated to state that at CMake v3.12 is required as a minimum?