Problem: Sometimes it is useful to read a file from a certain position
to it's end. The current implementation was already perfectly capable
of this, but decided to throw an error when the user tried to omit
the end option. The only way to do this, was to pass {end: Infinity}.
Solution: Automatically assume {end: Infinity} when omitted, and remove
the previous exception thrown. Also updated the docs.
closes#801.
Calling resume() immediately after calling pause() would trigger
a race condition where it would try to read() from a file
descriptor that was already being read from, causing an EBADF
Allows for more fine graining, especially finding out about an individual
chunk of data being flushed in a write stream rather than the whole queue.
This commit also fixes a bug causing forceClose to fail on a readStream that
did not finish opening yet.