====================
**Added:**
* Support for more ANSI escape sequence modifers allowed in color names.
The current modifiers now allowed are: BOLD, FAINT, ITALIC, UNDERLINE,
SLOWBLINK, FASTBLINK, INVERT, CONCEAL, and STRIKETHROUGH.
* New ``ansi_tools.ansi_color_name_to_escape_code()`` function for
converting a color name to an ANSI escape code.
* ``color_tools.RE_XONSH_COLOR`` is a regular expression for matching
xonsh color names.
* ``color_tools.iscolor()`` is a simple function for testing whether a
string is a valid color name or not.
* The ``tools.all_permutations()`` function yields all possible permutations
of an iterable, including removals.
**Changed:**
* change url of xontrib-autojump
* ANSI color styles may now be defined simply by their plain and intense colors.
* ``SET_FOREGROUND_3INTS_`` renamed to ``SET_FOREGROUND_FAINT_``,
``SET_BACKGROUND_3INTS_`` renamed to ``SET_BACKGROUND_FAINT_``,
``SET_FOREGROUND_SHORT_`` renamed to ``SET_FOREGROUND_SLOWBLINK_``, and
``SET_BACKGROUND_SHORT_`` renamed to ``SET_BACKGROUND_SLOWBLINK_``.
**Removed:**
* ``ansi_tools.ANSI_REVERSE_COLOR_NAME_TRANSLATIONS`` removed, as it is
no longer needed.
**Fixed:**
* Fixed issues where ``$LS_COLORS`` could not convert valid ANSI colors.
**Authors:**
* Anthony Scopatz
* virus