Fix print programs of a workflow

src/jflow/workflow.py

@@ -641,7 +641,7 @@ class Workflow(threading.Thread):
     def get_workflow_programs(self):
         programs = OrderedDict()
         for current_component in self.components:
-            version = current_component.get_version()
+            version = current_component.version
             if version:
                 program = {
                     "name": current_component.get_prg_name(),
@@ -650,8 +650,9 @@ class Workflow(threading.Thread):
                 }
                 for param in current_component.params_order:
                     param_obj = getattr(current_component, param)
-                    if param_obj.cmd_format != "":
-                        program["parameters"].append(param_obj.cmd_format.format(param_obj))
+                    if param_obj.cmd_format != "" and not param_obj.is_None and param_obj:
+                        program["parameters"].append(param_obj.cmd_format + ((" " + str(param_obj))
+                                                     if param_obj.type != bool else ""))
                 programs[current_component.get_nameid()] = program
         return programs