pinch_to_zoom_scrollable 0.1.2

A widget based on fork of Interactive Viewer (pinch wins over ScrollView in GestureArena) that makes picture pinch zoom, and return to its initial size and position when released.

[0.1.2]

New fields:

• zoomChild - change widget for zooming. Default is Null;
• rootOverlay - overlay.of(context) will use rootOverlay. Default is False.

Code quality improvements. thnx EArminjon <3

[0.1.1]

• Release