v2.4.0

• Add SUGAR model from Leget et al. (2020)
• Add support for the iminuit 2.0 API (#291).
• Update tox to work with any version of Python 3.
• Bugfixes:
  • Fix flatten_result bug due to API change (#285).

v2.3.0

• Add Swift UVOT bandpasses.
• Bugfixes:
  • Fix segfaults in bicubic interpolation.

v2.2.0

• Add core-collapse models from Vincenzi et al. (2019)
• New Spectrum class to handle processing and fitting spectral observations.
• Removed appveyor builds.
• Bugfixes:
  • Prevent segfaults in light curve fitting when the minuit fit fails.

v2.1.0

prep for v2.1.0 release (#264)

v1.8.0

• Add version 2.0 of many snana-... built-in core-collapse models, based on Pierel et al. 2018 (#229).

• Bugfixes:

  • Fix compatibility with scipy 1.3+ by removing outdated import statements (#238).

  • Fix issue affecting optimization of models with free propagation effects (#236).

v1.7.1

fix bug in setup

v1.4.0

prepare for v1.4.0 release

v1.2.0

API Changes

• Registry functions moved to the top-level namespace:

  • sncosmo.registry.register() -> sncosmo.register()
  • sncosmo.registry.register_loader() -> sncosmo.register_loader()
  • sncosmo.registry.retrieve() -> deprecated, use class-specific functions such as sncosmo.get_bandpass().

  The old import paths will still work, so this is backwards compatible.

Enhancements

• nest_lc() now uses the nestle module under the hood. A new
  keyword method is available which selects different sampling
  methods implemented by nestle. The new methods provide potential
  efficiency gains.
• The MLCS2k2 model is now available as a built-in Source, with the
  name 'mlcs2k2'.
• Bandpasses from the Carnegie Supernova Project added to built-ins.
• In realize_lcs(), a new scatter keyword makes adding noise
  optional.

In addition, there have been several minor bug fixes and
documentation improvements.

v1.0.0

API changes:

• The API of mcmc_lc has changed significantly (the function was marked
  experimental in previous release).
• [DEPRECATION] In result of fit_lc, res.cov_names changed to
  res.vparam_names.
• [DEPRECATION] In result of nest_lc, res.param_names changed to
  res.vparam_names. This is for compatibility between the results of fit_lc
  and nest_lc. [#30]
• [DEPRECATION] Deprecate flatten keyword argument in fit_lc() in
  favor of explicit use of flatten_result() function.

Enhancements:

• Many new built-in models.
• Many new built-in bandpasses.
• New remote data fetching system. [#73]
• SALT2 model covariance available via Model.bandfluxcov() method and
  modelcov=True keyword argument passed to fit_lc.
• New simulation function, zdist, generates a distribution of redshifts
  given a volumetric rate function and cosmology.
• New simulation function, realize_lcs, simulates light curve data given a
  model, parameters, and observations.
• Add color-related keyword arguments to plot_lc().
• Add tighten_ylim keyword argument to plot_lc().
• Add chisq() function and use internally in fit_lc().
• Add SFD98Map class for dealing with SFD (1998) dust maps persistently so
  that the underlying FITS files are opened only once.
• Update get_ebv_from_map() to work with new SkyCoord class in
  astropy.coordinates available in astropy v0.3 onward. Previously, this
  function did not work with astropy v0.4.x (where older coordinates classes
  had been removed).
• Update to new configuration system available in astropy v0.4 onward.
  This makes this release incompatible with astropy versions less than
  0.4.
• Now compatible with Python 3.
• Increased test coverage.
• Numerous minor bugfixes.