v3.1.0

Features

• Add vertical scroll
• Highlight special rulers (depending on granularity, but: years devisable by 10/100/1000/etc)
• Make different zoom level per events band possible
• Instead of overwriting the config, let the user adjust the config
• The center of the timeline is now also visibly the center, this helps the user considerably to keep his/her orientation when zooming (the center used to be a ratio where 0 was the outer left of the screen and 1 the outer right)

Perf

• Define the center of the timeline in ms instead of ratio (easier calcs)
• Filter events outside the viewport before drawing (these were not drawn, but were looped over)
• Major perf improv with only redrawing the parts of the minimap(s) that have changed

Fix

• Restore the dispatch of the change done event when animating
• Adjust the bands to a resize