feat: Add divide icons

[csandman]

Added 3 division icons (also knows as an obelus). One by itself, one with a circle around it, and one with a square around it. These are meant to compliment the plus, minus, and x icons and fill out the set of math icons.

The shapes are composed the same way as they are in the other math icons, using 1px lines for the points.

Closes #263

[codecov]

Codecov Report

Merging #568 into master will not change coverage by %.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #568   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            5         5           
  Lines           34        34           
  Branches         3         3           
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  Hits            34        34           

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[colebemis]

@csandman These look great! Thanks for opening a PR 🎉

My only feedback is that the dots on the divide icon might be a little small relative to the rest of the icon:

Could you try a version that uses a larger circle similar to the percent icon?

[csandman]

@colebemis Sorry I saw your comment so late! I gave it a shot, is this what you were thinking of?

The main reason I avoided this is because I felt that the circles were a bit too large but its up to you.

[mittalyashu]

@csandman If you zoom out the divide icon looks perfect with bigger dots.

[ElForastero]

Yeah, it looks a little bit thin compared to other icons.

But I still love it 😉

[csandman]

I know this is rather old, but I never pushed my change with the change requested by @colebemis

Anyway, now I have so feel free to merge if you like the change!

Here is what all 3 icons look like in context of the other icons:

[colebemis]

Thanks, @csandman! ❤️