Add EPANET2 input format

api/s4_tanks.py

@@ -144,6 +144,10 @@ def delete_tank(name: str, cs: ChangeSet) -> ChangeSet:
     return execute_command(name, delete_tank_cmd(name, cs))
 
 
+#--------------------------------------------------------------
+# [EPANET2]
+#   id elev initlevel minlevel maxlevel diam (minvol vcurve)
+#--------------------------------------------------------------
 class InpTank:
     def __init__(self, line: str) -> None:
         tokens = line.split()