xonsh 0.6.9

on Python PyPI

Added:

• New xonsh standard library xonsh.lib subpackage
• xonsh.lib.os.indir a context manager for temporarily entering into a directory
• xonsh.lib.subprocess.run and xonsh.lib.subprocess.check_call
  subprocess stubs using xonsh as the backend

Fixed:

• update xoreutils._which.which() for python 3.x support.
• Fixed issue with incorrect strip lengths for prefixes with quotes in them
• Fixed bash script to also consider leading double quotes and not just single
  quotes
• Launching xonsh with prompt_toolkit version 2.x no longer fails, and instead fallsback to readline shell. This is a patch for until prompt_toolkit 2.x support is fully implemented. See PR #2570