TODOs

[gr0uch]

• [x] Fix js-framework-benchmark by using appendChild rather than insertBefore in the edge case when the marker node is the last node, ~~perfect case of optimizing for benchmarks...~~ this seems to not be a bottleneck
• [x] ~~Improve create/append speed by memoizing positions of matched nodes after cloning.~~ not now
• [x] bindEvent helper should consider nested events and unbind those on removal (maybe? is something like inert possible or just a capturing event listener that does nothing?) https://github.com/daliwali/simulacra/commit/c02f56ec234bd11c5f6ab72f0a831bdd33f662e4
• [x] Refactor: remove usage of WeakMap, the only ES6 API used besides symbols (may be the best option still for DOM nodes though, unsure of benefits and drawbacks).
• [ ] Add simulacra.rerender symbol, to force a change to occur for the same value.
• [ ] Investigate using the Range API (link)
• [ ] Lisp rewrite #51