v0.25.0

Concentric corners: buttons and fields round with the Card, Dialog, Toast or Alert holding them
(Theme.concentric), the Drawer gains a grip to drag it by, and a Calendar, a Slider and
Steps no longer spill a phone's card. foldkit-mixins 0.15.0 and foldkit-mixins-ui 0.14.0
change, and foldkit-plus is 0.7.0. Packages that pin one of them, or a package that does,
republish with a patch so their ranges cover the new versions (foldkit-builder, foldkit-cms,
foldkit-cms-drizzle, foldkit-composition, foldkit-mixins-builder, foldkit-mixins-crud,
foldkit-mixins-data-grid, foldkit-mixins-form, foldkit-mixins-richtext,
foldkit-mixins-surface, foldkit-primitives). Nothing written for 0.24 needs changing; a
control in a card is drawn with a smaller corner (below).

Added

• foldkit-mixins/theme's Theme.concentric({ min, max }): a control's corner, concentric with
  the nearest container that nests (its corner less its inset), kept between min and max,
  and max outside any. Theme.nests now also publishes --fk-control-corner for it.

• In foldkit-mixins-ui, buttons, the segmented tray and every field's chrome take
  concentric({ min: sm, max: md }), and the Card, Dialog panel, Toast and Alert nests, so the
  buttons and fields in them round with their corner (sm where the padding is deeper than the
  corner, as in the default theme's cards). control-round still makes a button a pill.

• foldkit-mixins-ui's Drawer has a grip slot: more of the panel to drag it by, such as its
  row of tabs, where a vertical swipe drags and a sideways one still scrolls. A drag that starts
  there ends with no click to pass over, so the next press on the handle toggles it.

Changed

• A button or a field inside a Card, Dialog, Toast or Alert is drawn with a corner concentric with
  the container's instead of radius-md: with the shipped scale, radius-sm.
• The Drawer's handle is a 44px target, drawn tight to its bar by negative margins, and the
  peek stays above a phone's home indicator (safe-bottom).
• A Slider's mark labels at either end sit flush with the track's ends instead of centered on
  their dots, hanging half past the track.
• A horizontal Steps row narrower than 17rem draws the current step's title and description on
  a line of their own under the markers, the lines between them even, instead of squeezing them
  beside the current marker.

Fixed

• A Calendar's month in a container narrower than seven cells shrinks its days, which stay round,
  instead of spilling past the container.