xonsh 0.7.6

on Python PyPI

Added:

• Callable aliases may now accept a stack argument. If they do, then the
  stack, as computed from the aliases call site, is provided as a list of
  FrameInfo objects (as detailed in the standard library inspect
  module). Otherwise, the stack parameter is None.
• SubprocSpec now has a stack attribute, for passing the call stack
  to callable aliases. This defaults to None if the spec does not
  need the stack. The resolve_stack() method computes the stack
  attribute.

Changed:

• xonsh/environ.py
  Exceptions are caught in the code executed under Env.swap()

Fixed:

• Scripts are now cached by their realpath, not just abspath.
• Fixed a potential crash (AssertionError: wrong color format) on Python 3.5 and prompt_toolkit 1.
• The completer command now correctly finds completion functions
  when nested inside of other functions.
• Fixed a crash when using the $XONSH_STDERR_PREFIX/POSTFIX with
  prompt_toolkit and Pygments 2.2.