improved commandhandler

- analyze_<group> returns now a dict
- change_<group> has no more values arguments.
  values may be read with change.readValues(), which leaves more
  freedom to the programmer, especially if the values do not need
  to be read before a change

Change-Id: I67b70302eaf9bbdac107df61123062fa133d501d
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/22047
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

secop/modules.py

@@ -424,7 +424,7 @@ class Drivable(Writable):
 
     def isDriving(self, status=None):
         '''helper function (finalize is busy, not driving)'''
-        return 300 <= (status or self.status)[0] < 380
+        return 300 <= (status or self.status)[0] < 390
 
     # improved polling: may poll faster if module is BUSY
     def pollParams(self, nr=0):