Update client docs

docs/src/developers/client/README.md

@@ -17,15 +17,14 @@ Install facilmap-client as a dependency using npm or yarn:
 npm install -S facilmap-client
 ```
 
-or load the client directly from facilmap.org (along with socket.io, which is needed by facilmap-client):
+or import the client from a CDN (only recommended for test purposes):
 
 ```html
-<script src="https://unpkg.com/socket.io-client@4"></script>
-<script src="https://unpkg.com/facilmap-client@3"></script>
+<script type="module">
+	import Client from "https://esm.sh/facilmap-client";
+</script>
 ```
 
-The client class will be available as the global `FacilMap.Client` variable.
-
 
 ## TypeScript
 

docs/src/developers/client/types.md

@@ -24,7 +24,7 @@ A bounding box that describes which part of the map the user is currently viewin
 * `shape` (string): The shape name for the marker. Default is an empty string (equivalent to `"drop"`).
 * `ele` (number or null): The elevation of this marker in metres (set by the server)
 * `typeId` (number): The ID of the type of this marker
-* `data` (<code>{ &#91;fieldName: string&#93;: string }</code>): The filled out form fields of the marker. By default, this is a null-prototype object to avoid prototype pollution. Have a look at [marker/line data](./advanced.md#marker-line-data) for more details.
+* `data` (<code>{ &#91;fieldName: string&#93;: string }</code>): The filled out form fields of the marker. This is a null-prototype object to avoid prototype pollution.
 
 ## Line
 
@@ -52,7 +52,7 @@ separately through `linePoints` events.
 * `left`, `top`, `right`, `bottom` (number): The bounding box of the line (set by the server)
 * `extraInfo` (<code>{ &#91;type: string&#93;: Array<&#91;startIdx: number, endIdx: number, type: number&#93;>> }</code> or null): Extra details about the route (set by the server). `type` can be for example `steepness`, `surface` or `waytype`. `startIdx` and `endIdx` describe a segment on the trackpoints of the route, the meaning of `type` can be seen in the documentation of [Leaflet.Heightgraph](https://github.com/GIScience/Leaflet.Heightgraph/blob/master/example/mappings.js).
 * `typeId` (number): The ID of the type of this line
-* `data` (<code>{ &#91;fieldName: string&#93;: string }</code>): The filled out form fields of the line. By default, this is a null-prototype object to avoid prototype pollution. Have a look at [marker/line data](./advanced.md#marker-line-data) for more details.
+* `data` (<code>{ &#91;fieldName: string&#93;: string }</code>): The filled out form fields of the line. This is a null-prototype object to avoid prototype pollution.
 * `trackPoints`:
   * In the `lines` property of the client, an object of the format [<code>{ &#91;idx: number&#93;: TrackPoint }</code>](#trackpoint)
   * When creating/updating a line with the routing mode `track`, an array of the format [`TrackPoint[]`](#trackpoint)