d3-brush-lite

• d3-brush-lite is modified version of d3-brush.
• Author of d3-brush is Mike Bostock. Here is the link to its homepage: https://github.com/d3/d3-brush
• Author of d3-brush-lite is Peter Kerpedjiev (blog EmptyPipes). Peter created this code for his block sample here.
• Peter Kerpedjiev created d3-brush-lite because the original d3-brush in D3 v4 captures the shift, alt and meta keys to perform some actions by default. To get around this, he forked d3-brush and modified it so that it doesn't capture the shift events. The new version (d3-brush-lite) can be found on github.
• This repo is almost 100% forked from Peter's repo. It is published to npmjs solely for convenient installation into personal nodejs-based project.