The faster startup release

This release contains some optimizations to startup time, which may be significant if you create a lot of widgets. There are also some visual updates to Markdown.

This release will break your snapshots, although I don't expect any visual changes. If you are using the snapshot plugin, you will need to regenerate those snapshots. Even if you give them a quick scan, this should only take a few minutes.

[3.5.0] - 2025-06-20

Changed

• Optimized startup #5869
• New blank visual which makes background faster to render (note this will break snapshots tests this version) #5869
• Exposed code_indent_guides boolean on Markdown widget #5874
• Changed code fence background to use CSS background rather than its code theme #5874