- Update through2 to 3.0.1 (from 2.0.0) BREAKING: readable-stream 2 -> 3
- Update flush-write-stream to 2.0.0 (from 1.0.0) BREAKING: readable-stream ^2.3.6 -> ^3.1.1
- Update concat-stream to 2.0.0 (from 1.5.0) BREAKING: readable-stream ^2.2.2 -> ^3.0.2
- Update duplexify to 4.0.0 (from 3.4.2) BREAKING: readable-stream ^2.0.0 -> ^3.1.1