0.10.0

0.10.0

The group heading has no surface again. It was painted so it could sit a
level above the rows, and once the rows stopped being a level below it, the two
were the same material touching — a heading you could not tell from an item.

A heading sits on the pane; the rows under it are cards on a surface. That
difference of plane is what separates them, and no colour on the band could do
that job, because any band puts the heading on the rows' plane.

Tasks in no group get a band of their own, named and counted, drawn only
when something is in it. It is a band rather than a group: there is no ## line
in the file to rename, move or delete, so it carries a name and a count and
nothing else, the way the starred band does. A list whose every task is in a
group never sees it.

Adding to a list with groups defaults to no group. It defaulted to the last
heading — a destination nobody chose, and the furthest from the top of the list.

Two alignment bugs went with it. Completed's heading had drifted eight pixels
off the rail every other line starts on, and the new ungrouped band would have
done the same: with nothing to fold, nothing filled the leading column and the
name slid into it. Both are now covered by a check that measures every band
against the task titles, because this is a rendered fact rather than a readable
one — it is the difference between two declarations in different rules, and it
had broken twice without anything noticing.