Updates to solid, ko-jsx, mobx-jsx

[ryansolid]

Pretty major change to the API of the underlying renderer where it is no longer automatically wrapping every expression. This prompts a new release for all 3 of solid, ko-jsx, mobx-jsx. Some decent memory improvements for the first 2 but mobx-jsx doesn't seem to have really benefited from this update.

Also an even more significant update to solid to reduce API surface, and code, and increase compatibility with libraries like S.js and Surplus, at what I figure should be a noticeable performance change (it now wraps with ES6 proxies in all cases along the whole state tree which should have an overhead). As to the suggestions out of the setting a baseline discussion(#430) I'm attempting something similar to @localvoid event delegation example API. I'm still sort of out on it, as it seems like it's good from an event bubbling perspective so the implementor doesn't need to trace a DOM tree, but I mean reading DOM events is so primary (like event.target.value to read from an input) that I'm not sure it makes sense to be a thing.

I've spent the past week using this benchmark to try to reduce memory and regain that perfomance so hopeful net isn't so bad. This is one of those roll the dice commits in terms of performance, but I believe it's a big step forward for these libraries. I look forward to seeing the results.

[krausest]

FYI: I'm a bit busy at the moment. I hope to merge it later this week.

[krausest]

Thanks - here are the results: