Add TeX support ?

[kojix2]

Many of the recent updates to GR.jl have been about TeX. However, I don't know much about TeX, because I have no knowledge of it.
To be honest, mathematical formulas make me want to run away.

This is one of the reasons why the GR.rb updates have been delayed. However, I have recently installed TeXStudio on my computer and started using Pandoc to render PDFs from markdown. Pandoc uses TeX as its rendering engine.

Once I get a little more familiar with TeX, I may be able to add TeX support to GR.rb. But don't expect too much. I'm not very good at this field.