working in new Observation style
adapting to new Observatioin system
working on observation-based method
working on new obs system
working on new obs system
working on em1 and psf fluxes
guess from em1
working on full fit
working on new style
new config
support cosmos sersic g prior
printing some diagnostics
copy psf pars into epochs
calc pqr and lensfit g_sens.  Copy pars to output
working obs version