Fix branch aliases and apply spdx license format changes.

composer.json

@@ -3,7 +3,7 @@
     "description":"Javascript libraries for the Leaflet maps integration for Contao",
     "keywords":["contao", "maps", "leaflet"],
     "type":"contao-module",
-    "license":"LGPL-3.0+",
+    "license":"LGPL-3.0-or-later",
     "authors":[
         {
             "name":"David Molineus",
@@ -27,8 +27,8 @@
     },
     "extra":{
         "branch-alias": {
-            "dev-master": "1.0.x-dev",
+            "dev-master": "1.3.x-dev",
-            "dev-develop": "1.1.x-dev",
+            "dev-develop": "1.4.x-dev",
             "dev-support/0.7.x": "0.7.x-dev"
         },
         "contao": {