v0.2

Product release.

A-BetterGui commit

Improve Gui with text-messaging inspired chat bubbles.

A-UserGuide commit

Update README.md and Ui.png in docs

C-Update commit

C-Update staged.

A-CodeQuality commit

Improve code quality by refactoring code and removing obsolete fragments.

A-Assertions commit

Add assert statements

Level-10 commit.

Level 10 staged.

A-Gradle commit

Gradle used to automate build tasks.

A-Checkstyle commit

CheckStyle used to detect coding style violations. Gradle used to automate and detected violations were fixed.

Level-9 commit

Level-9 staged.