Prolific Shuttle v28.0.0-alpha.0

• Remove unused Duplicitous dependency.
• Update for upgrades.
• Upgrade duplicitous to ^0.2.8.
• Upgrade prolific.collector to ^12.0.1.
• Upgrade extant to ^2.0.0-alpha.0.
• Upgrade destructible to 7.0.0-alpha.48.
• Upgrade prolific.queue to ^22.0.0-alpha.1.
• Upgrade prolific.evaluator to ^4.0.2.
• Upgrade prolific.watcher to ^0.4.0-alpha.3.
• Upgrade destructible to 7.0.0-alpha.38.
• Remove rimraf dependency.
• Replace Prospective once with Eject.
• Update LICENSE for 2021.
• Upgrade destructible to 7.0.0-alpha.9. Closes #1363.
• Upgrade prospective to ^0.3.0. Closes #1362.
• Upgrade prolific.queue to ^21.0.0. Closes #1361.
• Upgrade prolific.watcher to ^0.3.0. Closes #1360.

Closes #1382.