Bind attribute improvements

What's Changed

• feature: Boolean condition modifiers by @g105b in #513
• feature: Terse debugging with data-bind-debug by @g105b in #515
• feature: edit multiple classes at once by @g105b in #517
• feature: Implement inverse token modifier by @g105b in #518
• fix: bindTable performance closes #521 by @g105b in #522
• Fix: Store parent of most deeply nested element during expansion by @g105b in #516
• test: isolate bug report #220 with no code to fix by @g105b in #510
• test: broken partial comments by @g105b in #512
• tweak: Optional return value for bindListCallback by @g105b in #514

Full Changelog: v3.5.1...v3.5.2