0.9.0 - 090810
* switched to Int64 for representing costs
* added a Maybe layer to readProfile as well
0.8.0 - 090802
* introduced profile query class to provide some flexibility
* introduced the statistics module
0.7.0 - 090731
* threw out most of the network protocol, which was obsoleted by the
idea that the grapher is provided as a library instead of a remote
controlled application
0.6.0 - 090729
* added a Maybe layer to the return values of profiling functions
0.5.0 - 090720
* added the ability to stop an asynchronous loading operation
0.4.0 - 090718
* added asynchronous loading
0.3.0 - 090705
* added interface for remote profiling, moved in networking code from
the grapher and the relay test apps
* modified stopper action to acknowledge the end of profiling by
invoking the callback with SinkStop
* hid internals and tests
0.2.0 - 090624
* network protocol implemented (un/marshalling functions)
0.1.0 - 090613
* added interface to specify profiling parameters
* added stopper action that terminates the reader thread in a clean way
* switched to bytestrings
0.0.0 - 090528
* basic functionality: profileCallback, profile, readProfile, and querying