New edge examples

Here's a care drop of new edge examples including how to animate nodes along an edge path, how to create temporary edges, and a demo of every connection event. We hope this new bundle of examples will help you level up your flow game!

This is a breakdown of what's been added:

• Two examples in one showing how to animate SVG elements and other nodes along an edge path.

• A new example showing how to create a temporary edge attached to only one handle. These edges can be picked back up and connected at a later time.

• We have a lot of events related to connections so we've created a small demo showing every connection and event and when they are triggered.