-------------------
* Implement support for more spectral models
(DMFitFunction, EblAtten, FileFunction, Gaussian).
* New options (``outdir_regex`` and ``workdir regex``) for
fine-grained control over input/output file staging.
* Add ``offset_roi_edge`` to source dictionary. Defined as the
distance from the source position to the edge of the ROI (< 0 =
inside the ROI, > 0 = outside the ROI).
* Add new variables in `~fermipy.gtanalysis.GTAnalysis.fit` output
(``edm``, ``fit_status``).
* Add new package scripts (``fermipy-collect-sources``,
``fermipy-cluster-sources``).
* Various refactoring and improvements in code for dealing with castro
data.
* Add ``MODEL_FLUX`` and ``PARAMS`` HDUs to SED FITS file. Many new
elements added SED output dictionary.
* Support NEWTON fitter with the same interface as MINUIT and
NEWMINUIT. Running `~fermipy.gtanalysis.GTAnalysis.fit` with
``optimizer`` = NEWTON will use the NEWTON fitter where applicable
(only free norms) and MINUIT otherwise. The ``optimizer`` argument
to `~fermipy.gtanalysis.GTAnalysis.sed`,
`~fermipy.gtanalysis.GTAnalysis.extension`, and
`~fermipy.gtanalysis.GTAnalysis.localize` can be used to override
the default optimizer at runtime. Note that the NEWTON fitter is
only supported by ST releases *after* 11-01-01.