Add notes for PIS development

src/pis.py

@@ -54,7 +54,7 @@ def parse(codeList):
         for ii in codeList:
             if stops == ii['stops'] and code != ii['code']:
                 print(f"Identical stopping pattern found: {ii['code']}")
-                codeList.remove(ii)
+                codeList.remove(ii) # Instead of removing, I should add a property (duplicate: true), then I can filter this out on the backend when searching by start and end stations and just use query one for other queries, this means that when searching by code, a perfectly valid code won't show 0 results.
         tiplocs = []
         for iii in stops:
           print(iii)