Dilute v2.0.0-alpha.9

• Update LICENSE for current year.

Closes #87.

Dilute v2.0.0-alpha.8

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

Closes #86.

Dilute v2.0.0-alpha.7

• Update LICENSE for 2021.
• Build with Node.js 12, 14 and 15 on CI/CD.
• Upgrade advance to ^3.0.0-alpha.9.

Closes #85.

Dilute v2.0.0-alpha.6

• Upgrade advance to ^3.0.0-alpha.8. Closes #83.
• Upgrade advance to ^3.0.0-alpha.7. Closes #82.

Closes #84.

Dilute v2.0.0-alpha.5

• External async. Closes #79.

Closes #81.

Dilute v2.0.0-alpha.4

• Reassign values for exclude, include, terminate. Closes #77.

Closes #78.

Dilute v2.0.0-alpha.3

• Return value as null when done. Closes #75.

Closes #76.

Dilute v2.0.0-alpha.2

• Add missing await to outer iterator next call. Closes #73.

Closes #74.

Dilute v2.0.0-alpha.1

• Run Istanbul at Travis CI. Closes #70.

Closes #72.

Dilute v2.0.0-alpha.0

• Export function instead of class. Closes #68.
• Caret pin Proof. Closes #60.
• Return array slices for inner iteration. Closes #67.
• Install Istanbul and Proof at Travis CI. Closes #66.
• Add chicklets and links to README.md. Closes #65.
• Build with Node.js 12 only on Travis CI. Closes #64. Closes #60.
• Update LICENSE for 2020. Closes #63.
• Build with Actions, ship coverage to Codecov. Closes #61. Closes #62.
• Remove old test directory. See #60.
• Convert README.md to Markdown. See #60.
• Add .gitignore and .npmignore. See #60.
• Convert to async/await. Closes #59.

Closes #69.