[] still generates a warning

[Erik Sandberg]

Hi,

the note "c8[]" generates the following warnings:
warning: beam has less than two visible stems:
warning: Beam has less than two stems. Removing beam.

though this (IMHO) should be the preferred way of saying that beaming should 
be turned off on that particular note. (though [] is a bit of a hack, it is 
easy to understand and quite intuitive)

Erik