v14.6.4

• Genesis and Express firmware updates.
• Fix bug where firmware parameters would appear to not be uploaded.
• Ability to handle numeric sequence variables from Lua
• Silence timeout error messages from user log stream
• Add photo_grid() technical preview to Lua VM.
• Better handling of timeout errors in lua http() function.
• Bugfix: Prevent firmware handler from crashing when there is an active but unused pin watcher.