v5.1.0-ember-cli-flash: Prepare Release using 'release-plan' (#406)

Release (2024-02-29)

ember-cli-flash 5.1.0 (minor)

🚀 Enhancement

• ember-cli-flash
  • #405 Add FlashMessage to TypeScript definitions (@charlesfries)

🐛 Bug Fix

• ember-cli-flash
  • #399 fix(types): add typesVersions map (@simonihmig)

🏠 Internal

• #407 Update release-plan to get the latest bugfixes (@NullVoxPopuli)

Committers: 3

• Charles Fries (@charlesfries)
• Simon Ihmig (@simonihmig)
• @NullVoxPopuli