Handle multiline text by splitting into "flowPara"s

SotMDeckBuilder.py

@@ -23,7 +23,11 @@ def setText(tree, id, text):
         print("id", id, "not found")
         return
     elif element.tag == "{http://www.w3.org/2000/svg}flowRoot":
-        element.find("{http://www.w3.org/2000/svg}flowPara").text = text
+        for e in element.findall("{http://www.w3.org/2000/svg}flowPara"):
+            element.remove(e) # clear child paragraphs
+        lines = str(text).splitlines()
+        for line in lines:
+            etree.SubElement(element, "{http://www.w3.org/2000/svg}flowPara").text=line
     else:
         element[0].text = str(text)