Singularity 1.0 release

• Ability to create Singularity containers based on a package specfile
• Specfile templates can be generated automatically (singularity specgen ...)
• Support for various automatic dependency resolution
  • Dynamic libraries
  • Perl scripts and modules
  • Python scripts and modules
  • R scripts and modules
  • Basic X11 support
  • Open MPI (v2.1 - which is not yet released)
• Direct execution of Singularity containers (e.g. ./container.sapp [opts])
• Access to files in your home directory and a scratch directory
• Existing IO (pipes, stdio, stderr, and stdin) all maintained through container
• Singularity internal container cache management
• Standard networking access (exactly as it does on the host)
• Singularity containers run within existing resource contexts (CGroups and ulimits are maintained)
• Support for scalable execution of MPI parallel jobs
• Singularity containers are portable between Linux distributions