Notes

https://medium.com/swift2go/mastering-generics-with-protocols-the-specification-pattern-5e2e303af4ca

https://www.hackingwithswift.com/read/30/4/fixing-the-bugs-slow-shadows

https://www.raywenderlich.com/261-how-to-make-a-uiviewcontroller-transition-animation-like-in-the-ping-app#toc-anchor-007

https://medium.com/@phanquanghoang/using-gitlab-ci-cd-fastlane-for-ios-project-part-1-5e7db82a3566

https://developer.apple.com/documentation/metrickit/improving_your_app_s_performance/

https://uimovement.com/_/search/?page=18&q=mobile

Documenting:
https://www.appcoda.com/swift-markdown/

Animation Libs:
https://github.com/onmyway133/fantastic-ios-animation

Libs:
https://github.com/rechsteiner/Parchment
https://github.com/SinaMoetakef/SMNumberWheel

e-book:
https://www.oreilly.com/library/view/high-performance-ios/9781491910993/ch04.html

Tut:
https://www.raywenderlich.com/1746-how-to-create-a-complex-loading-animation-in-swift