update to changes from mlz repo

- bug fixes in error.py
- add from * to raise statements
- fix py35 compatibility
- finalize omit_unchanged_within feature
- fix follwup bug (missing Param.override) in proxy.py

Change-Id: I621c01a0d5e1ec6696fb06f39666f3316fb53649

secop/gui/params/__init__.py

@@ -39,7 +39,7 @@ class ParameterWidget(QWidget):
                  initvalue=None,
                  readonly=True,
                  parent=None):
-        super(ParameterWidget, self).__init__(parent)
+        super().__init__(parent)
         self._module = module
         self._paramcmd = paramcmd
         self._datatype = datatype
@@ -82,7 +82,6 @@ class GenericParameterWidget(ParameterWidget):
         else:
             value = fmtstr % (value.value,)
         self.currentLineEdit.setText(value)
-        # self.currentLineEdit.setText(str(value))
 
 
 class EnumParameterWidget(GenericParameterWidget):