Update Upstream#19

Merged

tvalentius merged 4 commits intotvalentius:nextfrom

Mar 26, 2018

Commits on Mar 25, 2018

Add ESLint check for incorrect propTypes usage (#3840) (#4048)
iansu
authored

Commits on Mar 26, 2018

Revert lint-related changes made in #4193 (#4211)

NMinhNguyen
authored and
iansu
committed
add `create-react-app --help` info for local file path `--scripts-version` support (#4015)

albertstill
authored and
Timer
committed
Add some stuff that requires transpilation. (#4174)

bradfordlemley
authored and
Timer
committed