Added 1x 10x 100x buttons to research and skill tree
Added a second level to turbo spins to buy in the star metal shop
Changed when Ultra and mega boss spawns a full wave of enemies will spawn with them.
Did some optimization to fix lag problems in the global upgrades and tower upgrades
In hard mode mega and ultra boss skill tree upgrade max level has been changed from 5000 to 10000.
On hard mode fixed skill tree displaying the wrong costs
On the research upgrades I made some changes to Global upgrade discount, Tower upgrade discount and Enemy heath to help the game scale better in higher waves.