[FLASH-USERS] FLASH 4.6.1 Release

[Klaus Weide]

Dear Users,

The Flash Center Code Group announces the release of an updated version
of the FLASH code, version 4.6.1.

This release is a minor update over FLASH version 4.6.
The list of changes from the RELEASE-NOTES file is appended.

The release is available as a tarball FLASH4.6.1.tar.gz, in the usual 
location on the Flash Center Web site at http://flash.uchicago.edu/.

Best,
-- the Flash Center Code Group

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!  New in FLASH 4.6.1 (since FLASH 4.6) - June 2019    !!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

* Corrected Ohmic heating term for nonideal MHD in hy_uhd_unsplitUpdate:
  erroneous multiplication by density.

* New runtime parameter for optionally specifying laser beam intensities in
  1D and 2D Cartesian simulations in a more natural way by determining the
  beam power profile via beam power, not power per length or area unit.

* Enabled and updated XrayImaging unit, included new unit tests.

* Fixed occasional generation of invalid refinement pattern by PARAMESH in
  2D and 3D spherical coordinates.

* Disabled PM_OPTIMIZE_MORTONBND_FETCHLIST to avoid rare runtime error in
  guard cell communication.

* Added modifications to make setup work better with Python3, including
  removing 8bit characters and TAB character consistency. We have also
  added some extra features in the setup command.

* Improved detection of case-insensitive file system by setup to avoid
  unnecessary recompilation by make in some Docker environments.

* Disabled use of 1D profile in default configuration of Sedov example.