Hi.

I need wlsunset -v or --version to show me the version so I can update 
if it's needed but it seems that currently there isn't anyway to check 
the running version of wlsunset.

Thanks!

Can't your package manager provide this information?

Indeed, a package manager can normally report this if used.

However, I have added a -v flag to master as it is pretty standard to 
have. It is only useful for comparing released versions as there is no 
commit information at the current time, just the version number (still 
0.1.0).