0.59.3

Fixed

• aep --version prints aep <version> and --help and usage errors print Usage: aep …. They printed the alias's name, protocol. The protocol alias still prints the same bytes as aep, so it now identifies as aep too.
• aep plan artifact new review-result refusing an empty findings block now names [] as the way to record a review with no findings. It previously told the writer to leave the block out, which validate then reports as a review stating its findings in prose only.