Update 0.16

Hello again! This update is yet another small bug-fixing and optimization update. I had originally intended for this update to include new runes, as well as an endless mode, but those inclusions have been pushed to next update. • Summons should now be more consistent in their target selection. • Optimized the summon spell. • Remnants of the Destroyer will no longer kill bosses. • Limited how many enemies can exist at any given time. • Fixed a bug causing brightness and other settings not loading till the Settings menu was opened. • You can now hit Space to unpause after leveling up • Buffed the following runes; - Flash Frost - Former Gift - Large Summon