fixing events to work with d3 v7

Fixing the ping layer removal

Adding an example of toggling hex layer on/off and moved the fix around

Merge pull request #63 from Asymmetrik/develop

4.4.0

version increment

Merge pull request #58 from Asymmetrik/develop

Updating versions, removing dist dir from repo

Merge pull request #58 from Asymmetrik/develop

Updating versions, removing dist dir from repo

Merge pull request #57 from Asymmetrik/develop

Filter out hexes that are completely off the map

Merge pull request #53 from Asymmetrik/develop

4.1 changes

Merge pull request #52 from Asymmetrik/develop

v4 - d3 v5 and several fixes/updates