This is a pretty big under-the-hood update.
#### Significant Changes
-* Change clock base to improve stability. You need to use the updated `nqptp` that has also been changed.
+* Change clock base to improve stability. You need to use the updated `nqptp` that has also been changed. If you forget, Shairport Sync will not work properly and will leave a message in the log.
* Avoid skipping the first 100 milliseconds or so of a newly-selected track.
* Clean up the output of statistics — shorter when log verbosity is zero.
* Change behaviour after an unrecoverable error -- if not handled, exit Shairport Sync.