Highlight range of time

# ❔Question

hey. thanks again for this library.

i'm rendering a chart that's composed of a list of `EventChart`s. i'd like the highlight a range of time on that chart.

i found ``, which looks pretty nice. i might eventually be interested in being able to drag the bush around or stretch it out, but i mainly want to highlight a spans of time and still have clickable events on the chart.

currently, the `` appears to overlay the entire x-axis, so i can't click a charted event -- the `onSelectionChange` handler doesn't fire. also, if i'm rendering 3 `EventChart`s, then i'm also rendering 3 separate `Brush`es.

is there a better way to highlight a range of time without preventing click events?

#### Your Environment
| Software | Name/Version|
| ---------------- | ---------- |
| react-timeseries-charts | v0.15.5
| Browser | Chrome 74
| Operating System | MacOS v10.14.3