bumped version to 4.2.0~dev8

debian/changelog

+advligorts (4.2.0~dev8-1) unstable; urgency=medium
+
+  * functions added to ligoPcieTiming.c
+  * cleanup of ADC drivers
+
+ -- Erik von Reis <evonreis@caltech.edu>  Thu, 03 Jun 2021 14:08:51 -0700
+
 advligorts (4.2.0~dev7-1) unstable; urgency=medium
 
   * Added advligorts-dev package with some header files needed in other