'live' Pattern-change Behaviour

Well, I’m very much opposed to using colors, for a number of reasons:

  • Colors could indicate different parts of a song in a future version of Renoise
  • Shades are already being used (check out “seq.highlights” in song settings)

So instead, I came up with the following (sry for the dark color-scheme)

Note that insert/clone icons are getting dangerously close, and might need a rework.