Add Liquid Programming Lang.

[liqtags]

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Add the programming language Liquid.

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Add the programming language Liquid.

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[lauthieb]

There's a new release including this subject 🎉
https://github.com/lauthieb/code-notes/releases/tag/1.2.1

[liqtags]

Woop! Thank you @lauthieb