Rev #58 03/10/2006 to Rev #68 02/11/2007
* Polling rate limits can now be configured dynamically.
* Latency sampling now also shows maximal sync times.
* NaNs can now be entered in the stream and highlighted.
* Memory usage reduction (reduced in half).
* 'Z' allows to specify view limits by center and amplitude.
* Support for multiple graphs in a single instance.
* Using '-' as a file name now causes stdin to be read.http://www.thregr.org/~wavexx/software/trend/releases/ trend-20071102.tar.gz
