Fix fd leak

If request was disconnected before the stat() callback was called, we
will never get the 'close' or 'error' event and the file descriptor will
stay open forever
Merge pull request #22 from yuvalkariv/master

fd leak in send
Release 0.1.2
Revert "Fix fd leak"

This reverts commit 3a90c005f7c03c31562583fd881da39b2e35d997.
Release 0.1.3
update fresh
Release 0.1.4
Merge remote-tracking branch 'upstream/master' into multiple-index