0.2.1

Fixed

• The 0.2.0 archives report entity 0.1.0. The changelog was cut, the tag was written and the
  workspace version was never bumped, so five platforms' binaries went out claiming to be the
  release before them. 0.2.1 is 0.2.0 with its own version number — nothing else in the runtime
  changed — and with the check that would have caught it: a test comparing the binary's version to
  the newest released heading in this file, which the gate runs. Use 0.2.1; 0.2.0's archives are
  correct code under the wrong name.