• Extracted theme logic from App.svelte into a dedicated Svelte store
• Added a Dark (Balanced) theme
• Added a Light (Balanced) theme
• Added tables and HTML mode to signature composer
• Added option to use native title bar/decorations - #53
• Added display of reply-to, cc, and bcc if not empty - #54
• Added always load image setting - #40
• Fixed Cosmic Desktop bug - needs testing - #55
• Added workaround instructions for GPU driver bugs - #56