[1.3.0 - 1.3.4]
- Added Grade Level Selector to adjust the available math operations and number ranges for each grade (K-5).
- Added Counting for K-2 grades.
- Added Settings screen and moved the Music & Sound Effects setting to that screen.
- Added new options in Settings screen to rate the app or to provide feedback.
- Graphical, visual and audio improvements.
- General maintenance and bug fixes.