Enable Label to support multiple lines of text

[John Sundell]

Currently, the Label class only supports rendering a single line of text, and (per default) automatically resizes itself to fit that line of text. The auto-resizing can already be disabled by setting shouldAutoResize to true, but still it'll only render on a single line.

The good news is that CATextLayer (which Label uses for rendering) already supports multiple lines of text, we just need to add support for setting the isWrapped property on it to true. I suggest adding a shouldWrap property (to match shouldAutoResize in terms of naming) to Label which in turn toggles isWrapped on the underlying layer.

[Alex]

I got this one :D

EDIT: Just closed my PR 😅. Forgot about unit test. Is it necessary for that one? It's just
public var shouldWrap = false { didSet { layer.isWrapped = shouldWrap } }

[John Sundell]

Sorry @Alex88WH, I didn't see your edit (you don't get notifications for edits) - but PR looked great 👍 Thanks again for contributing 🚀 Closing this since it's now fixed!