Fixed luminosity - it failed if wnu was not specified and you tried to plot Also added ability to make asymmetric error bars, i.e. specify a central frequency for an asymmetric band.  
Fixed luminosity - it failed if wnu was not specified and you tried to plot
Also added ability to make asymmetric error bars, i.e. specify a central
frequency for an asymmetric band.  


git-svn-id: 4511b3d811903a91403bf66535cdd426db6c410e@76 7a03b35a-38c0-11de-8fef-1f5ae417a2df

keflavich/agpy,astocko/agpy,astocko/agpy,astocko/agpy,keflavich/agpy,keflavich/agpy,keflavich/agpy,astocko/agpy