Update 0.6: Blue God's lair, controller improvements

///NEW -new final area, enemies, and boss. Good luck! -new ending

-new relic: Tutankhamun's Riches -new relic: Fractional Reserve -new relic: Snuff Film

-new achievement: The End

///BALANCE -god XP scaling in hard mode is more generous -relic Shield Psy gives much more shield now

///TWEAKS -improved snap aim mode with gamepad (big thanks to Terr0rbyte) -can choose levelup with gamepad joystick (thanks Terr0rbyte) -added option to switch aiming/moving thumbstick (thanks vacantcode) -main UI shows button prompts for gamepad controls if gamepad is plugged in -text prompts now show gamepad prompts -tutorial now shows button prompts for gamepad controls -hud tooltips show controller inputs if gamepad is plugged in -added message at start of hub area about swapping aim modes if player has gamepad plugged in -pause menu has a new graphic for gamepad controls if gamepad is plugged in

///FIXES -fixed blood perk still healing enemies after timer reaches 0 (thanks dave) -fixed crash from healer enemy (thanks hiccups) -fixed crash in tutorial with cards (thanks Musterd) -fixed FPS drops from enemy perk poison's gas