Resolve "release v1.2.0"

Closes #257 (closed)

supplement/station_list_north_german_plain.json

+[
+"DENI031",
+"DESH016",
+"DEBB050",
+"DEHH022",
+"DEHH049",
+"DEHH021",
+"DEMV007",
+"DESH015",
+"DEBE062",
+"DEHH012",
+"DESH004",
+"DENI062",
+"DEBE051",
+"DEHH011",
+"DEHH023",
+"DEUB020",
+"DESH005",
+"DEBB039",
+"DEHH050",
+"DENI029",
+"DESH001",
+"DEBE001",
+"DEHH030",
+"DEHH018",
+"DEUB022",
+"DEBB038",
+"DEBB053",
+"DEMV017",
+"DENI063",
+"DENI058",
+"DESH014",
+"DEUB007",
+"DEUB005",
+"DEBB051",
+"DEUB034",
+"DEST089",
+"DEHH005",
+"DESH003",
+"DEUB028",
+"DESH017",
+"DEUB030",
+"DEMV012",
+"DENI052",
+"DENI059",
+"DENI060",
+"DESH013",
+"DEUB006",
+"DEMV018",
+"DEUB027",
+"DEUB026",
+"DEUB038",
+"DEMV001",
+"DEUB024",
+"DEUB037",
+"DESH008",
+"DEMV004",
+"DEUB040",
+"DEMV024",
+"DEMV026",
+"DESH056",
+"DEHH063",
+"DEUB001",
+"DEST069",
+"DEBB040",
+"DEBB028",
+"DEBB048",
+"DEBB063",
+"DEBB067",
+"DESH006",
+"DEBE008",
+"DESH012",
+"DEHH004",
+"DEBE009",
+"DEHH007",
+"DEBE005",
+"DEHH057",
+"DEHH047",
+"DEBE006",
+"DEBB110"
+]