Improve the PDF output from ReadTheDocs platform

[radinamatic]

Current default PDF output from the RTD version of the docs is not optimal and it can use several improvements.

• better text & page formatting
• consistency in image sizes
• accessibility

[ivanistheone]

Let me know if I can help with something on that front. I've got 10+ years experience with LaTeX ;)

[radinamatic]

That would be awesome, thanks @ivanistheone! 🙏

[radinamatic]

Fixed in #78 & 81, closing!