v2.4.0-beta.0

• Add ctrl + enter to create new text element below current text element (#858)
• Add text based file format (#823)
• Add specific fill color (#802)
• Redesign pack system (#805)
• Improve error resistence in webdav file system (#857)
• Fix temporary handler not working correctly
• Fix text elements not correctly movable on pasting
• Fix new line not working in label tool
• Remove duplicated name property in pack items
• Fix server crash when invalid request is made
• Upgrade to flutter 3.32

Read more here: https://linwood.dev/butterfly/2.4.0-beta.0