Move navigation from C++ to C# (#1752) Replace C++ version of detour & detour crowd with a C# version. Managed version should behave exactly the same as the native version. If not, please yell at me. Achieved by using dotrecast as base - Refactored the shit out of it - Optimised it, so the managed performance comes close to the native version. Navmesh generation (recast) is still in C++.