Happenstance v13.0.0-alpha.1

• Update LICENSE for current year.

Closes #110.

Happenstance v13.0.0-alpha.0

• Replace a few vars.
• Rename Scheduler to Calendar. Closes #108.
• Create Edify README.md.

Closes #109.

Happenstance v12.0.5

• Build with Node.js 16 on GitHub Actions.
• Build with Node.js 16 on Travis CI.

Closes #106.

Happenstance v12.0.4

• Update LICENSE for 2021.
• Build with Node.js 12, 14 and 15 on CI/CD.

Closes #105.

Happenstance v12.0.3

• Upgrade proof to ^9.0.2. Closes #103.
• Update LICENSE for 2020. Closes #102.

Closes #104.

Happenstance v12.0.2

• Remove /.dots from .gitignore. Closes #100.

Closes #101.

Happenstance v12.0.1

• Add badges to README.md. Closes #98.
• Build with Actions, ship coverage to Codecov. Closes #97. Closes #96.
• Tidy .gitignore. Closes #95.
• Build with Node.js 10 on Travis CI. Closes #94.
• Revert test to Proof. Closes #93.

Closes #99.