Text colors, day separators and Obsidian

Lognote 6.3.0 has been submitted to Apple for iOS and macOS. The App Store release follows approval.

• Text colors: Color selected text directly in the editor, with readable colors on priority backgrounds.
• Automatic day separators: Add bold, centered date headings to the Classic layout. Configure them under Note layout or separately for each group.
• Recently edited sorting: Show the notes you last changed at the top of the list.
• Obsidian integration: Connect vaults under Settings → Connectors to read and edit their Markdown notes in Lognote.
• Copy notes between groups: Copy one or several notes, including attachments, as independent copies.
• Photo date and location: Use original capture information from the photo preview, or import it automatically with global and per-group settings.
• Camera improvements on iPhone and iPad: Full screen, 4:3, 1:1 and 16:9 formats, improved photo quality, rearranged controls, revised background audio handling and previews at up to 60 fps on supported cameras.
• Writing and drafts: Restored automatic bullet and numbered lists, conversion of --> to →, and better draft protection when switching notes or using the expanded editor.
• Further fixes: QuickType, timestamp syncing, voice memo saving, text colors in supported exports, HTML handling, backup image counts and layouts with large text.