modeling docfix.
modeling docfix
Crash fixes: image.process.psfmatch did not run at all.
Added comet.flux2Q.
Merge branch 'master' into dev
Crash fix for image.analysis.bgfit.
Crash fix for image.analysis.imstat.
Another crash fix for imstat.
Really, imstat runs now.
Remove print statements from comet.flux2Q
Make SolarSysObject.ephemeris take an observer, rather than a target.

This makes ephemeris similar to lightcurve and fluxd.  Only observe is
different, but in this case the Object is observing something else.
Merge pull request #18 from mkelley/ephemeris-refactor

Ephemeris to take an observer, rather than a target.