v1.6.0

Version 1.6.0: Anomaly genes by @Turnovus in #6

Added genes:

• Blissful
• Variable phenotype
• Mutating (Anomaly)
• Mutant regeneration (Anomaly)
• Flesh burster (Anomaly)

Terrified gene is now affected by surrounding terror level.

Full Changelog: v1.5.2...v1.6.0