Options in mrtrix functions

In several cases, I get errors indicating that unrecognized options are provided to mrtrix functions:

In dwipreproc, the option -cuda is not recognized.

In mrinfo, the options -vox and -shells are not recognized.

Reading the mrtrix documentation, it looks like the option -shells provided to mrinfo should instead be -shell_bvalues, but I didn't find equivalents for the others.

I'm using mrtrix version 3.0_RC3. As an aside, I cloned this version of mrtrix directly from https://github.com/MRtrix3/mrtrix3.git (as specified by the mrtrix documentation) rather than from https://github.com/jdtournier/mrtrix3.git (as specified by the SCRIPTS installation instructions). Following the SCRIPTS installation instructions, I somehow downloaded mrtrix2.