Ember 0.3.0

What's Changed

• Fill in Set up Ember AI's account ID from the deploy by @kropdx in #220
• Let administrators and each person choose [at]ember's model by @kropdx in #223
• Badge [at]ember as an agent wherever its name shows by @kropdx in #221
• Let Deploy to Cloudflare users keep messages in D1 by @kropdx in #218
• Let [at]ember search the web behind a Search the web switch by @kropdx in #222
• Say how to trim the token Deploy to Cloudflare's builds run with by @kropdx in #225
• Release Ember 0.3.0 by @kropdx in #224

Full Changelog: v0.2.0...v0.3.0