v0.1.2

Changelog

• 48411d8 Let auth login take credentials on stdin
• a246495 Fix what driving the installed skill exposed

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Verify a download:

shasum -a 256 -c trello-cli_0.1.2_checksums.txt --ignore-missing

Run trello-cli contract for the envelope version and exit-code table this
build obeys, and trello-cli version for the build itself.