Update changelog for versions 0.0.354 to 0.0.356

Update changelog for versions 0.0.354 to 0.0.356

Update changelog for versions 0.0.354 to 0.0.356

Update changelog for versions 0.0.354 to 0.0.356

Update changelog for versions 0.0.354 to 0.0.356

Delete CHANGELOG.md

Delete CHANGELOG.md

Delete CHANGELOG.md

Delete CHANGELOG.md

Update changelog for custom agents and /delegate command

Added support for custom agents and a new /delegate command for task delegation.