* Implement write/read buffers in electron fill
This makes cutting and copy files from the file tree work.
* Implement fs.createReadStream
This is used by the file tree to copy files.
* Allow passing proxies back from client to server
This makes things like piping streams possible.
* Synchronously bind to proxy events
This eliminates any chance whatsoever of missing events due to binding
too late.
* Make it possible to bind some events on demand
* Add some protocol documentation
