allow to convert numpy arrays to ArrayOf

accept all sequences instead of just tuple / list
+ change Module.announceUpdate to convert value before
  comparing with previous one (comparing will not work with numpy arrays)

Change-Id: I5eceef4297607107e2dde688af2833d3651a8775
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/28525
Tested-by: Markus Zolliker <markus.zolliker@psi.ch>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

secop/modules.py

@@ -509,10 +509,11 @@ class Module(HasAccessibles):
             # TODO: remove readerror 'property' and replace value with exception
             pobj = self.parameters[pname]
             timestamp = timestamp or time.time()
-            changed = pobj.value != value
             try:
+                value = pobj.datatype(value)
+                changed = pobj.value != value
                 # store the value even in case of error
-                pobj.value = pobj.datatype(value)
+                pobj.value = value
             except Exception as e:
                 if isinstance(e, DiscouragedConversion):
                     if DiscouragedConversion.log_message: