Fix conflicts in Heightgraph integration

patches/leaflet.heightgraph+1.3.3.patch

@@ -0,0 +1,28 @@
+diff --git a/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js b/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
+index 122c9ac..1a966af 100644
+--- a/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
++++ b/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
+@@ -1282,10 +1282,10 @@ function schedule(node, name, id, index, group, timing) {
+     group: group, // For context during callback.
+     on: emptyOn,
+     tween: emptyTween,
+-    time: timing.time,
+-    delay: timing.delay,
+-    duration: timing.duration,
+-    ease: timing.ease,
++    time: timing ? timing.time : 0,
++    delay: timing ? timing.delay : 0,
++    duration: timing ? timing.duration : 0,
++    ease: timing ? timing.ease : null,
+     timer: null,
+     state: CREATED
+   });
+@@ -3062,7 +3062,7 @@ function initRange(domain, range) {
+ 
+ var prefix = "$";
+ 
+-function Map() {}
++// function Map() {}
+ 
+ Map.prototype = map.prototype = {
+   constructor: Map,