Fujilupe release candidate

[moustakas]

Backwards incompatible updates in preparation of generating fastspec and fastphot catalogs for Fuji+Guadalupe. Together with #55, #61, and #64, this PR contains many significant improvements, including:

• All non-sky spectra at z>0.001 are now fit by default, irrespective of ZWARN or COADD_FIBERSTATUS (relax the constraint on PHOTSYS #45).
• Balmer and Helium lines now optionally include both broad and narrow components (Broad+Narrow Balmer line components #47).
• The [OII] 3726,29, [SII] 6716,31, and MgII 2796,2803 doublets are now fit using a more robust model which optimizes the ratio of the doublet lines (fit for the doublet ratio as a free parameter (with physical priors) #39).
• The velocity dispersion is now estimated for spectra with enough signal-to-noise (improve velocity dispersion estimates #67).
• More robust initialization of parameters to help ensure numerical convergence (Unreal fits because the fit does not converge to a final solution #52).
• A simple stellar mass estimate is now computed (compute a simple stellar mass #70).
• Minimum photometric uncertainties included when fitting photometry (add minimum photometric uncertainties in fastphot #22). In addition, W3 and W4 fluxes and ivar fluxes have been propagated and now included in the fastphot QA.
• Numerous bug fixes and many data model improvements and changes.

Still on the critical path at the moment:

• Profile the code to identify speed-ups.
• Test the feasibility of writing out the best-fitting model spectra.
• Consider gzipping the output catalogs, in order to save disk space.
• Fix the failing unit tests.
• Update the documentation and installation instructions.

[moustakas]

@weaverba137 @sbailey I'm having trouble understanding why coverage tests are failing. One of the errors is Could not submit coverage: 422 Client Error: Unprocessable Entity for url: https://coveralls.io/api/v1/jobs. Could you help me debug or point me in the right direction if you've seen this before?

[moustakas]

There's some discussion of the coverage failures here but one of the suggested solutions unfortunately didn't work--
lemurheavy/coveralls-public#1435

[moustakas]

These tasks are complete:

• Test the feasibility of writing out the best-fitting model spectra.
• Consider gzipping the output catalogs, in order to save disk space.
• Fix the failing unit tests.

These tasks will be moved to a separate PR:

• Profile the code to identify speed-ups.
• Update the documentation and installation instructions.