v0.2.1

Changes:

• 03f8916 Add unit tests
• 908bd39 Optimize wait modal widget cancellation
• 735106f Implement connection cancelation
• 4d83512 Finish wait modal widget
• 3d73997 Enhance spinner widget
• 03f0234 Add spinner widget
• 9308732 Fix gofmt and golint issues
• e979022 Refactor main screen building and related event handling
• c2629af Add application package

This list of changes was auto generated.