blank line before global vars

Author: RemDelaporteMathurin

src/python/templates/template_with_macros.py

@@ -7,6 +7,7 @@
 {% from 'block_macros.py' import create_block, create_integrator_block, create_bubbler_block, create_connections, create_event -%}
 
 # Create global variables
+
 {%- if pythonCode %}
 {{ pythonCode }}
 {% endif -%}