As an icon package owner as well, will I need to do some modification in the code and/or letting users know in README how to set this up or will it be automatically?

@mzdm Good question. I'll have instructions in the release notes next month, with screen shots.

As an icon package owner as well, will I need to do some modification in the code and/or letting users know in README how to set this up or will it be automatically?

Each project has to configure the icon packs it wants to see previews for. There is a new text field in the preferences/settings page for the Flutter plugin for that. I may be able to eliminate that, and analyze the pubspec.yaml but ran out of time to fully investigate that. Adding instructions to your package would help get the word out.

Here's a screen shot of the new text pane, showing all the icon packages that are known to work. I know of three that do not work, and warn users about them (flutter_icons, flutter_vector_icons, material_design_icons_flutter).

@stevemessick Great, thanks! I'll be watching the future commits/release notes for instructions. 👍

LGTM

Still doesnt work with my custom icons from FlutterIcon