CCL: ChimeraX 1.8 release

 Sent to CCL by: "Elaine  Meng" [meng~~cgl.ucsf.edu]
 UCSF ChimeraX version 1.8 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/download.html
 Updates since version 1.7 (Dec 2023) include:
 - show worm depictions of attribute values (B-factor, conservation, etc.)
   using Render by Attribute tool or "cartoon byattribute" command
 - show attribute values with atomic radii using Render by Attribute or
   "size byattribute"
 - Select by Attribute graphical interface
 - Join Models generalized to any covalent bond (not just peptide)
 - show multiple alternate locations simultaneously with "altlocs show"
 - "pbond" command to create arbitrary pseudobonds
 - "measure contactarea" to report the area of one surface within a
 cutoff
   distance of another
 - Segmentations tool for interactive manual segmentation in 2D slice views,
   3D (desktop), or 3D (VR) can be applied to any volume data, not just
   medical images; several fixes and ergonomic improvements including icons
   to assign/deassign mouse and VR hand-controller modes with a single click
 - set up and analyze batch AlphaFold predictions to search for
   protein-protein interactions (commands for advanced users who can
   run ColabFold directly on Linux)
 support for:
 - reading predicted aligned error (PAE) data from AlphaFold 3
 - reading docking results from MOE
 - fetching atomic structures and maps from PDB-REDO
 - fetching/display of PDB NMR-STAR restraints
 For details, please see the ChimeraX change log:
 https://www.rbvi.ucsf.edu/trac/ChimeraX/wiki/ChangeLog
 On behalf of the team,
 Elaine
 -----
 Elaine C. Meng, Ph.D.
 UCSF Chimera(X) team
 Resource for Biocomputing, Visualization, and Informatics
 Department of Pharmaceutical Chemistry
 University of California, San Francisco