concurrent-output-1.7.9: Ungarble output from several threads or commands

# concurrent-output-1.7.9: Ungarble output from several threads or commands

Lets multiple threads and external processes concurrently output to the console, without it getting all garbled up.

Built on top of that is a way of defining multiple output regions, which are automatically laid out on the screen and can be individually updated by concurrent threads. Can be used for progress displays etc.

Modules

- System
  - Console
    - System.Console.Concurrent
      - System.Console.Concurrent.Internal
    - System.Console.Regions
  - Process
    - System.Process.Concurrent