Merge pull request #58 from salesforce/bumpVersion

Bump version

Updated to Kotlin 1.4

polish up the ui per latest design and upgrade to nimbus 2

* polish up the ui per latest design

* alway render the blue focus ring in the center

* make the focus region to have rounder corner

* upgrade to nimbus 2 and address pr comments

* address more pr comments

* try to fix test failures