- Taking a 3x4 affine matrix and adding an orthogonal row to make it 4x4
- Removed all transformations from clip to screen space as our camera matrix now goes directly from world to screen space
- Removed division by w (it's 1 anyway)

Conflicts:
	CMakeLists.txt: Just merged the new affine renderer headers and texture_extraction.hpp.

- It works with our affine camera matrices estimated from the H&Z algorithm
- Performs depth testing and rasterises triangles
- Vertex-colouring only, no texturing
- Will be used for the texture extraction

Also removed a few trailing whitespaces

Added an extensive check to see if the user is running MSVC, gcc or clang and what version. It's a bit unnecessary to be honest because it's documented. I will possibly remove it after dropping support for gcc-4.8 and -std=c++11.

The assembly on VC14 is the same, but anyway!

For path operator +=

Added 'header-only' and changed the publication to the ICIP paper.

Added cereal include directory to CMake

In preparation for the serialisation - and declared it empty, to work around a VS bug with =default