updated game progression

Recent updates to taproach for you to test and enjoy... Thanks!

• Added shadows to the bugs that are cast by the light spot.
• Improved lighting and bug contrast.
• Refine level progression to present different wave ‘flavors’ and give more time at higher waves.
• Change centipede color from blue to green.
• Made ants worth more and changed their splat color.
• Super boss roaches get red hot before exploding.
• Alteration to centipede motion mechanics.
• Changed 3-letter initials entry to 5-letters with scroller letter entry.

taproach