v3.1: Quality of life improvements

What's Changed

• V3.1: Quality of life improvements by @OmChachad in #6

Here's what's new in Linkeeper 3.1!
• Tap a bookmark in list or table view to open it instantly in your browser
• Optional confirmation before opening links to prevent accidents (enable from
Settings)
• Show or hide table view columns to match your workflow
• Hold Command to quickly select multiple bookmarks
• Select all bookmarks at once to move or delete in bulk
• Enhanced Share Extension support, including App Store and other links
• General performance improvements and bug fixes based on your feedback

Full Changelog: v3.0...v3.1