refactor: typescript

[cdaringe]

problem

• Flow types are incomplete, out-of-sync, and generally weak, but TS types on reconciler are up-to-date
• JSX/TSX KV assertions are poor

solution

• update key deps (react-reconciler, ts, babel, etc)
• update reconciler to newer API
• prune a handful of junk examples
• drop debounced render--let optimized fiber deal w/ it (unless there are shell contraints i ought be aware of!)
• migrate & refactor, aggressively :/

todo

• [ ] type out prop APIs for elements
• [ ] export first class components, so as to avoid bad react.d.ts typings having all of ReactDOM typings conflict with blessed
• [ ] discern what is wrong w/ an aspect on the reconciler. examples/index has issue when entering a demo, hitting esc closes the demo and demo state is not defined when it should be
• [ ] tests. get serious about tests.