Seems I was using a broken version (from homebrew). Downloading the latest 0.97.2...
Does not work for me on macOS Sierra Version 10.12.2, XQuartz 2.7.11: Stephens-iMac:bin...
Does not work for me on macOS Sierra Version 10.12.2: Stephens-iMac:bin scstarkey$...
Does not work for me on macOS Sierra Version 10.12.2: Stephens-iMac:bin scstarkey$...