Version 0.16 Released

Changes:

- Added changelog to the main menu

- Adjusted the rank calculation

- Units now spawn 0.3s apart from each other (0.5 -> 0.3)

Rebalanced base gems:

- Increased damage of Chipped Emerald (1 -> 2)

- Increased damage of Flawed Emerald (2 -> 4)

- Increased damage of Normal Emerald (4 -> 8)

- Increased damage of Flawless Emerald (8 -> 12)

- Increased damage of Perfect Emerald (16 -> 24)

- Increased damage of Chipped Amethyst (1 -> 2)

- Increased damage of Chipped Ruby (1 -> 2)

- Increased damage of Perfect Ruby (16 -> 24)

- Increased damage of Chipped Saphire (1 -> 2)

- Increased damage of Flawed Saphire (2 -> 4)

- Increased damage of Normal Saphire (4 -> 8)

- Increased damage of Flawless Saphire (8 -> 12)

- Increased damage of Silver (25 -> 30)

- Increased damage of Silver Knight (60 -> 70)

- Increased the attack range of the following gems: Silver, Silver Knight, Pink Diamond, Huge Pink Diamond (6 -> 8)