Progress update on alternative rendering engines project

I am currently working on implementing optimizations from fontdue in the `dense` module.

As soon as I am done with it, I will send the benchmark results and will start work on implementing support for subpixel antialiasing in the module.
I will also be testing the module to ensure that it works correctly in real-world programs.

Once the subpixel antialiasing support is done, I will work on SIMD support for ARM processors.

I am simultaneously working on improving the documentation and will share further updates soon.

Regards,
Anurag