More Levels & Coin Bug Fix

This is my first Devlog so this is going to be a bit bad.

Fixes:

1. Coin Bug

  - Coins from previous levels that weren't collected on the previous levels carried over

2. Crash on Level 3

  - Fixed the game from crashing when completing level 3.

Additions:

1. 2 new levels

  - Level 4: "Alternation"
  - Level 5: "Up and Down Scales"