GalSim version 1.5 released.

[Mike Jarvis]

We are happy to announce a new version of GalSim: Version 1.5.

Highlights of the new functionality:

- The SEDs are now more disciplined about the units, which had been a bit poorly defined previously.

- Updated the WFIRST module to be consistent with the Cycle 7 specifications.

- Added some new profiles: DeltaFunction, RandomWalk, InclinedExponential, and InclinedSersic.

- Added a new sensor interface, including a SiliconSensor that models the LSST sensors, including the brighter-fatter effect and tree rings.

- Changes some of the syntax to be more pythonic.  The older syntax should still work in almost all cases, but will generate a deprecation warning telling you how your code should be changed.  See the CHANGELOG for the full set of deprecations.

- Added ability to use FFTW from python directly on GalSim Images.

- Added complex Images, which are used in drawKImage and InterpolatedKImage.

- Added a geometric optics option for photon shooting PhaseScreen PSFs, which is much faster.

- Many improvements to the config layer processing that we needed for DES image simulations.

- Various bug fixes and many other more minor feature additions.  Read the CHANGELOG for the full set of changes from v1.4 to v1.5.

So far, it is only available via  direct download, but it will soon be available in the various other normal places (fink, macports, LSST DM stack, ...)

See the INSTALL.md file for complete details about installation.

Peace,

Mike, on behalf of the GalSim developers