3.13.0

The layout hash: no more raising cfgRev

The Dash app fetches a device's layout again only when the device reports a different layout ID. Until now that was cfgRev, which had to be raised by hand every time the layout changed. A device now reports # and the 64-bit FNV-1a hash of its layout instead, so the app notices a changed layout by itself. See How layouts work.

• On by default. device.layout_id is what the device reports.
• Older Dash apps: app versions from before the hash take the device as having no layout. Update the app, or use Device(..., layout_hash=False) to report cfgRev as before.
• When cfgRev is still used: a device with layouts loaded for more than one column count (one hash can't describe them all), with layout_hash=False, and after use_cfg(). In those cases, keep raising cfgRev as before (Keeping cfgRev up to date).
• The Dash server checks the layout a store and forward device sends it against the hash, and they match.

TextBox colours

• Setting color or caption_color now sends it. Before, the new colour only went to the app with the next text.
• When an app connects, a TextBox sends its text and its caption, each in its colour. Before, the app showed the text in white after every reconnect, and didn't get the caption.

Full changes: 3.12.0...3.13.0