Add comments based on mail by Martin Husemann.
Change Log for Releases
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## 003.007.003
* Fixed examples
* Removed compiler warnings
* Fixed CBX LO settings (FRAC truncation)
* Fixed build issues for out-of-tree tools for some distros
* Fixed some logging strings (SBX, GPSDO)
* Improved logging (speedups, removed unnecessary cycles)
* Added output sync for DAC reference clocks on X300