Polish for tooltips + text field layer placeholder text (#1351)

When a layer input or field can be added to the canvas, show the (+) …

…button on the inspector's row (#1301)

Require CMD for Pack and Unpack shortcuts (#1275)

Fixed connected node shortcut for layer inputs (#1244)

Removed the StitchAI scheme (#1219)

Disable unit test for non-AI builds (#791)

Reverts camera feed creation logic (#706)

iPad, upon project first open: better re-rendering when a Group Layer…

…'s Scroll Enabled input is set true (#640)

* Remove some log statements

* Use @bindable var when passing down LayerInputObservers in LayerInspectorView

Improve responsiveness of looped-values preview (#605)

1.5.5: improvements to sidebar, perf, undo + bug fixes (#486)