v0.10.0

Added

• A section can travel cut down. export.sections: in .schema/<type>.yaml takes summary and reference
  alongside full. summary carries the section's opening paragraph. reference carries the key with no words under
  it, leaving a consumer the record's own path and links to follow. kac validate no longer refuses either.

• The export manifest states the fidelity each section travelled at. Every entry under types carries a
  sections object naming its sections and how much of each one travels, so a consumer can tell a cut section from a
  whole one.

Changed

• kac validate reports a reduced fidelity against export.parts: alone. A part line carries full, because
  line: already names key by key what of a part travels. A type declaring summary or reference there is still
  reported as declaring a fidelity nothing carries.