[WIP] Those little things, both systems

[niieani]

They don't make or break a deal, but a load of those little thing does add up... like:

TS:

• badass autocomplete with literals https://github.com/Microsoft/TypeScript/issues/13789

Flow: ...

[niieani]

Talk about quality of errors and show examples side-by-side. (e.g. TS specific about properties)

[sibelius]

examples like this https://github.com/bcherny/flow-to-typescript