v1.18.0

Changed

Everything waits for Save. Some new traces were written to the atrium the
moment they were made: a shape, a text box, a dropped picture, a template, an
import, a drawing, a group. They didn't show in the history, Don't Save left
them there, and leaving without saving kept them anyway. Now every new trace
and every group change waits for Save like any other change: each is a step
you can undo, Don't Save takes it back, and leaving without saving leaves the
atrium as it was last saved.

An atrium's card shows it as saved. The picture on its card was sometimes
taken with unsaved changes in it, sometimes not. It's now made when you save,
and when you leave with nothing waiting: never from changes you didn't keep.

Interface sounds. Soft, low sounds for saving, tools, panels opening and
closing, removing, a new template's reveal and an achievement. On by default
in the desktop app; turn them off in the atrium's preferences or on your
Profile (the two are the same switch).

Your palette. Drag a colour to move it; right-click one to change it.
Clicking still copies its code.

Flips follow the world. Flipping a rotated trace used to flip it along its
own tilted axes. Horizontal and vertical now mean the world's, and several
traces flip together around the middle of the whole selection, not each on
its own.

Fills Box text shows its size. The size field used to disappear with Fills
Box. It now always shows, and setting it resizes the box to fit.

Fixed

The colour dropper reads anything drawn. It only worked over pictures; it
now takes the colour of whatever is under the pointer: shapes, text, drawings,
the canvas.

Area selection with connections. Adding to a selection by dragging an area
or a lasso let go of the connections already selected. It now adds to them,
as it does to traces.

Shift-snap when cropping. A crop's edge dragged with Shift lands on a
neighbouring trace's edge or middle again, or else on the grid.

The minimap in dark mode. Traces ran together; each one's edges now show.

Drawing on a light canvas. The default stroke colour was white, unseen on
a light canvas. It's now whichever reads on the canvas.

Also

The Help (press ?) has grown to over thirty articles, with pictures and short
recordings, numbered steps that read as steps, and pictures beside their
tables. The import window no longer quotes an old size limit.