Merge branch 'master' of https://github.com/usgs/waterdataui into add_basin

CHANGELOG.md

assets/src/scripts/components/hydrograph/date-controls.js

...s/src/scripts/components/hydrograph/date-controls.spec.js

assets/src/scripts/components/hydrograph/drawing-data.js

assets/src/scripts/components/hydrograph/graph-controls.js

assets/src/scripts/components/hydrograph/index.js

assets/src/scripts/components/hydrograph/index.spec.js

assets/src/scripts/components/hydrograph/method-picker.js

assets/src/scripts/components/hydrograph/scales.js

assets/src/scripts/components/hydrograph/time-series-data.js

...ts/src/scripts/components/hydrograph/time-series-graph.js

assets/src/scripts/components/hydrograph/time-series.js

assets/src/scripts/components/hydrograph/time-series.spec.js

assets/src/scripts/index.js

assets/src/scripts/index.spec.js

assets/src/scripts/polyfills.js

assets/src/scripts/selectors/time-series-selector.js

assets/src/scripts/selectors/time-series-selector.spec.js

assets/src/scripts/store/index.js

assets/src/scripts/store/index.spec.js