CCL: UCSF ChimeraX version 1.3 release

["Elaine Meng" <meng|*|cgl.ucsf.edu>]

 Sent to CCL by: "Elaine  Meng" [meng-.-cgl.ucsf.edu]
 UCSF ChimeraX version 1.3 has been released!
 ChimeraX includes user documentation and is free for noncommercial use.
 Download for Windows, Linux, and MacOS from:
 https://www.rbvi.ucsf.edu/chimerax/
 Updates since version 1.2 (May 2021) include:
 - AlphaFold tool and command to get AI-predicted protein structures
 - Selection Inspector to inspect/change attributes of atoms, bonds, etc.
 - Scale Bar tool and command
 - new BLAST Protein GUI with easier controls for showing hit info such as
     source species, crystallographic resolution, ligands in structure
 - Altloc Explorer tool and command to switch among alternate locations
 - model loops and missing segments with Modeller
 - combine or copy models
 - change bond lengths
 - apply command files iteratively to multiple input files
 - list multiple map-fitting solutions from global search
 For more details, see the ChimeraX change log:
 https://www.rbvi.ucsf.edu/trac/ChimeraX/wiki/ChangeLog