Memento v0.1.34

• Build with Node.js 16 on Travis CI.
• Add force to rm.
• Search for fs.rm.
• Upgrade interrupt to 11.0.0-alpha.23.
• Upgrade avenue to 0.6.15.
• Upgrade b-tree to 2.0.0-alpha.112.
• Upgrade keyify to ^3.0.0.
• Upgrade verbatim to 0.1.5.
• Upgrade whittle to 0.0.3.
• Upgrade satiate to 0.0.4.
• Upgrade amalgamate to 0.1.69.
• Upgrade constrain to 2.0.0-alpha.4.
• Upgrade reciprocate to 0.0.8.
• Upgrade destructible to 7.0.0-alpha.67.
• Upgrade rescue to 7.0.0-alpha.16.
• Upgrade journalist to 0.1.28.
• Upgrade perhaps to 0.0.11.
• Build with Node.js 16 on GitHub Actions.

Closes #132.