Update changelog.md for version 0.0.393

Update changelog.md for version 0.0.392

Merge pull request github#1078 from github/RyanHecht-patch-1

Update LICENSE.md

Merge pull request github#1066 from github/devm33-patch-1

Change splash screen image for Copilot CLI

Merge pull request github#1058 from github/ellismg/support-prerelease…

…-for-install-sh

Allow installing prerelease CLI with `install.sh`

Merge pull request github#1039 from github/mit-license

Update to MIT license

Update changelog.md for version 0.0.388

Update changelog.md for version 0.0.387

Update changelog.md for version 0.0.387

Update changelog.md for version 0.0.387