Downloaded tarball from here:
Extracted to directory on my system. Using java 8. Ran the command line and got this output:
In previous versions, this was the output:
One can get a bit further by placing logback-core into the lib folder. With that in place the error is now different:
The 3 missing jars that got things working for me are:
which now gives the following output:
But this version apparently does not have usage info which is quite helpful to have.