0.7.3

Changed

• Made vendored review and release doctrine self-contained by replacing cross-repository references with local records. (#408).

Fixed

• Every early-exiting reader in lib/changelog.sh and the two label
  actions is fed from a variable instead of a pipe. A reader that exits
  early left its writer taking EPIPE, so pipefail failed the pipeline
  although the reader had succeeded (#364, #411).
• changelog-armed no longer fabricates a changelog shape violation
  against a repository whose published section is large, and no longer
  passes a real one in silence (#411).
• A scope label whose glob matches early in a large PR's changed-file
  list is applied instead of silently dropped (#411).