Seperated Mesh and HotMesh into distinct files and changed both classes. Added variadic tools and new way to fill vertex buffer.
More cleanup + move ctor for mesh.
Cleaned .gitignore
glfwInit is just called for the first window now + glfwTerminate is called when first window creation failed
window clean-up
Merge branch 'master' of github.com:LukasKalbertodt/lumina-sandbox