Changed Bike link format.

Links now look like bike://<rootID>/<focusID>#<selectID>. Focus and select are optional parts. The Copy Link command includes focus and selection. Links support an optional target=(tab|window) query parameter.

• Added script access to Bike’s edit mode
• Added explanation label to “Show Checking…” menu item
• Added support for reading Hookmark links from pasteboard
• Changed blue replacement underline to show only when active
• Fixed crash for some user text replacement combinations
• Fixed read/write of OPML files to keep row attributes
• Fixed crash when editing same outline in multiple windows
• Fixed crash when selecting unnormalized text with Katakana input
• Fixed performance when outdenting a folded row in text mode
• Fixed crash moving between strings with different Unicode normalizations