1.2.1

Fixed

• The core builds on Linux. UnitAngularVelocity, UnitDensity, UnitMassFlowRate and
  UnitVolumetricFlowRate provide the init(symbol:) that swift-corelibs-foundation requires of
  every Dimension subclass, and String(localized:) resolves to its English key there, as
  open-source Foundation has no string catalogs. CI now builds and tests the core in a Linux
  container.

1.2.0

Added

• A numeric field raises a Done button in the bar above its keyboard while it
  is being edited. The number and decimal pads have no Return key, so a field
  raising one could otherwise only be left by tapping elsewhere or scrolling.
  It is a plain button, drawn in clear glass; only the focused field offers it.
  Its "Done" label is looked up in the app's own string catalog, like the labels
  an app passes its fields. NumericKeypad.doneButtonIdentifier names it for UI
  tests.

Changed

• The README carries an Embedding section: which products an Xcode target must
  embed, the transitive case where a target embeds a framework of its own that
  links one, why the core must not be added by hand, and the dyld text the
  failure produces, so a search for that text lands somewhere useful. The 1.1.0
  entry has been corrected in place — it said consumers building through Xcode
  need do nothing, which is the opposite of true for any app linking these
  products, and is what made the breakage expensive to find.

Security

• Strict memory safety (SE-0458) is enabled across every target, all of which
  were already clean under it.

1.1.0

Changed

• MeasurementKitLocation, MeasurementKitUI and MeasurementKitDefaults are dynamic library
  products, so each links the core rather than absorbing a copy of it. Consumers that build
  through Xcode need do nothing; a SwiftPM executable linking one of them now has a dynamic
  library to find at run time.

Fixed

• A unit class is registered once per process rather than once per product linked. Linking two
  products that build on the core — MeasurementKit and MeasurementKitUI, say — used to give
  the process two registrations of every class the core declares, and two registrations of
  UnitSlope are two distinct classes to the Objective-C runtime. Comparing a measurement made
  against one with a measurement made against the other trapped in Foundation with "Attempt to
  compare measurements with non-equal dimensions" instead of converting.