I couldn't find anything about it, and #62 suggests that it's not documented yet, just as the main website page.

The output of a compilation suggests that --keep-intermediates is one.
I am especially interested in support for dvi output, synctex (#56, that's not a command line option?), and -shell-escape (but I see #38 is still open) but a more complete list would be kind of nice. In fact, any documentation would be kind of nice ;)

I am willing to contribute a bit to the documentation, but I have no clue at all where to look in the source code.