2.0

Upgrade Flutter v3.16

- Upgrade from Flutter v1.13.8 to v3.16.

v1.5

*Create app logo.
*Create web demo.
*Update ReadMe format.

v1.4

*Release under BSD Zero Clause License.
*Deprecation fixes.

v1.3

*Happy Flutter Anniversary!

v1.2

*Update Gradle to v5.0.

v1.1

*Create ReadMe.

v1.0

*v1.0 Release.