v40.0.0

40.0.0 (2026-08-27)

⚠ BREAKING CHANGES

• slider: limel-slider's change event emits null when the
  value is cleared, widening its payload from number to number | null.
  The value prop accepts number | null for the same reason, so a
  cleared value can be handed straight back to the slider. Handlers that
  assume a number must guard for null; every optional, editable slider
  can now be cleared by the user.

Features

• slider: allow the value to be unset (86a33d2), closes #4161

Bug Fixes

• slider: correctly center align the thumb's value (82d752b)
• translations: substitute falsy merge-code values (efcee7e)
• translations: support unmapped and aliased languages (018b357), closes #4162