Summary of important user-visible changes for version 5.0 (yyyy-mm-dd):
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 ** The functions issymmetric and ishermitian accept an option "nonskew"
    or "skew" to calculate the symmetric or skew-symmetric property
    of a matrix.  Performance has also been increased. 

 ** Deprecated functions.

    The following functions have been deprecated in Octave 5.0 and will
    be removed from Octave 7 (or whatever version is the second major
    release after 5.0):

      Function             | Replacement
      ---------------------|------------------
                           |                           

 ** The following functions were deprecated in Octave 4.2 and have been
    removed from Octave 5.0.



 ** Deprecated graphics properties.

    The following properties or allowed corresponding values have been
    deprecated in Octave 4.4 and will be removed from Octave 6 (or whatever
    version is the second major release after 4.4):

      Object               | Property                | Value
      ---------------------|-------------------------|-------------------
      figure               | doublebuffer            |
                           | mincolormap             |
                           | wvisual                 |
                           | wvisualmode             |
                           | xdisplay                |
                           | xvisual                 |
                           | xvisualmode             |
      axes                 | drawmode                |
      annotation           | edgecolor ("rectangle") |
      text                 | fontweight              | "demi" and "light"
      uicontrol            | fontweight              | "demi" and "light"
      uipanel              | fontweight              | "demi" and "light"
      uibuttongroup        | fontweight              | "demi" and "light"

 ** The following properties or allowed corresponding values were
    deprecated in Octave 4.2 and have been removed from Octave 5.0:

      Object               | Property                | Value
      ---------------------|-------------------------|-------------------
      axes                 | xaxislocation           | "zero"
                           | yaxislocation           | "zero"
      patch                | normalmode              |
      surface              | normalmode              |

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