Reconfigure v4.0.0

• Add more time for test timeouts. Closes #102.
• Upgrade fast-deep-equal to 3.1.1. Closes #101.
• Upgrade avenue to ^0.3.0. Closes #100.
• Upgrade prospective to ^0.2.0. Closes #99.
• Update LICENSE for 2020. Closes #98.
• Upgrade proof to ^9.0.1. Closes #97.
• Remove /.dots from .gitignore. Closes #96.

Closes #103.