xonsh 0.5.8

on Python PyPI

Changed:

• The xonsh.platform.os_environ wrapper is now case-insesitive and
  case-preserving on Windows.
• The private _TeeStd class will no longer attempt to write to a
  standard buffer after the tee has been 'closed' and the standard
  buffer returned to the system.

Fixed:

• Fixed a bug on py34 where os.scandir was used by accident.
• Line continuations (\\) is subproc mode will no longer consume the
  surrounding whitespace.
• Fixed a bug if foreign_shell name was not written in lower case in
  the static configuration file config.json
• Fixed a regression on Windows where caused which reported that the
  PATH envrionment variable could not be found.
• Fixed issue with foregrounding jobs that were started in the background.
• Fixed that Ctrl-C crashes xonsh after running an invalid command.
• Fixed an potential ProcessLookupError issue, see #2288.