update .gitignore
Generate a more appropriate .gitignore file for the project
https://git-scm.com/docs/gitignore
I have been using this page in order to generate them automatically
The LaTeX part is good so far, but we will need at least to extend it to octave files as well. You can see from the header which keywords I used so far:
latex,linux,windows,macos,vim,sublimetext
You can visit
https://www.toptal.com/developers/gitignore?templates=latex,linux,windows,macos,vim,sublimetext
in order to extend the keywords to what we further need.
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