add RequestSet.__ne__() method so rset != other works
clarify semantics of Requester new_request() and send_requests()
use latch=True to close timing windows between adverising and sending
fix more problems in RequestSet equality testing
send another request following a feedback message only if callback does something
in merge(): add new requests before deleting old ones
fix bugs in deleting released requests
dummy request node fixes
add Scheduler.notify() method to trigger requester feedback
clarify Requester and Scheduler callback documentation
explain merge() semantics
better doc formatting
clean up messy file backups
minor dummy scheduler clean-up
fix bug in released merge test case
remove RequestSet.replies, pass type name of contents instead (#13)
README update
Merge remote-tracking branch 'upstream/master'