A Wizard's Lizard: Soul Thief 0.20.0

Happy Friday! Here are this week's updates:

* Add Prawn monster to Kitchen
* Add Rune Box to Wizard's Lab
* Add secrets around merchants
* Fix boss music playing on unpause after boss defeat
* Fix keyboard/gamepad input bug
* Add Electric Eel trinket
* Add Aquarium toy
* Add unlock for winning as Tesla Coil
* Fix credits scene opacity bug