The diff looks really weird because I clang-formatted the whole document. But there should be no changes in extract_texture, except for tabs->spaces.

* Can now return any cv::Mat to Matlab
* Can convert 3 and 4-channel images from Matlab to cv::Mat

This enables defining multiple functions per Matlab mex module

Can return 4-chan uchar matrices (isomaps) back to Matlab, and convert 3-chan uchar matrices (images) from Matlab to C++.

* Convert Frustum back and forth
* Convert RenderingParameters back to C++
* Convert glm::mat4x4 back to C++

Matlab's default precision is double, that's why we only convert MatrixXd for now. Added a note highlighting this.

'project' declare independent block of CMake code. If block is not designed
to be used stand-alone it make no sense to declare 'project'

Adjusted all includes, files and bindings.

Also swapped order of project() declaration and cmake_minimum_required()

This mainly required conversions for glm quat and mat4x4.

This contains conversion for vector<glm::tvecX> for the vertices, colours, and texcoords, and vector<array<int, 3>> for the triangle indices.
We can now successfully return a Mesh to Matlab.

Calling it works great!
No result is returned yet from C++ to Matlab.

This works when the current working directory in matlab is eos/matlab!