Browser icons & more
Again, thank you so much for such an awesome icon set!

A few suggestions for the next release:

1. Browser icons: Firefox, IE, Edge, Opera, Chrome and Safari
2. Square half - the same, but in horizontal direction. Something like .ph-square-half-horizontal
3. More file types - currently you have added only PDF, but would be extremely useful to have more file types: ZIP, PNG, JPG, XLS, CSV, DOC, PPT.
4. ZIP icon - apart from file type, which says "ZIP", having a separate icon for zip archive would be super handy
5. Some other logos related to development - SASS, CSS, HTML, JS, Angular, React, Vue, Tailwind

Cheers!
