Switch to Mapillary API v4

package.json

@@ -52,6 +52,7 @@
     "abortcontroller-polyfill": "^1.4.0",
     "aes-js": "^3.1.2",
     "alif-toolkit": "^1.2.9",
+    "base64-js": "1.5.1",
     "core-js": "^3.6.5",
     "diacritics": "1.3.0",
     "fast-deep-equal": "~3.1.1",
@@ -94,7 +95,7 @@
     "happen": "^0.3.1",
     "js-yaml": "^4.0.0",
     "json-stringify-pretty-compact": "^3.0.0",
-    "mapillary-js": "~3.1.0",
+    "mapillary-js": "4.0.0",
     "mapillary_sprite_source": "^1.8.0",
     "minimist": "^1.2.3",
     "mocha": "^7.0.1",