v6.0.0-beta2

This is a bug fix release that includes one of the best bug fixes we could ask for. @dustmop has rewritten our windows read/write subsystem! This should bring reads and writes down from 100% cpu to 1-2% cpu. Give it a try!

Bug Fixes

• docs: Add a note about windows support 76b7191, closes #1299
• docs: correct default highWaterMark to 65536 bytes e83ec4e
• package: update debug to version 3.0.0 #1292 4987750
• docs: Fixed typo in upgrade guide #1321 bf251a9
• windows: Asynchronous callbacks for reading and writing #1328 69de595, closes #1221