iOS System Icons

We're in an effort to unify our icon library even further, and in the midst of this I've been once again going through all published resources from Apple to find guidelines and grids for toolbar and navigation bar icons since iOS 11 (and Music.app for some time) has some new tricks and visual expressions.

Unfortunately, there is not much to go by. So, I've started working on our own version of this, and the first exercise has been to re-draw and unify all system icons outlined by Apple here: https://developer.apple.com/ios/human-interface-guidelines/graphics/system-icons/

I will try to publish all my findings, the source files for the icons and a template for the icon grid in the coming weeks, but wanted to share the progress so far.