v0.12.0

What's Changed

• chore(release): merge changelogs from release/v0.11.0 by @annawen1 in #190
• fix(chat): Text highlights, file uploader, error/warning system for prompt by @ocornec in #193
• feat(molecule): Molecular component and file uploader by @ocornec in #199
• fix(feedback): feedback slug incorrectly displays "flag" icon by @priyanshu891 in #200
• feat(prompt-tuning): new Prompt Tuning component by @lily-peng in #201
• chore(publish): merge changelog and version bumps from release branch by @annawen1 in #202

Full Changelog: v0.11.0...v0.12.0