Typos
For v3, the .dtx is not self-contained: an .ins file is needed
Merge branch 'master' of github.com:josephwright/siunitx
Stray comma
First test file for unit formatter

Some of the unit commands are not currently documented: this needs
to be fixed. The aim is to test all of the 'basic' unit commands
first, then move on to the other formatting public commands,
multiple units and applying all of the options.