Version 1.6.0

Features

• Allow generic type for numberProp, by @jhoermann in #181

Internal changes

• Use jest-extended again, by @FloEdelmann in #142
• Lint, by @FloEdelmann in #165
• Add motivation section to docs, by @FloEdelmann in #164
• Bump development dependencies

Full Changelog: v1.5.1...v1.6.0