SF #989185: Drop unicode.iswide() and unicode.width() and add
unicodedata.east_asian_width().  You can still implement your own
simple width() function using it like this:
    def width(u):
        w = 0
        for c in unicodedata.normalize('NFC', u):
            cwidth = unicodedata.east_asian_width(c)
            if cwidth in ('W', 'F'): w += 2
            else: w += 1
        return w
diff --git a/Doc/lib/libunicodedata.tex b/Doc/lib/libunicodedata.tex
index a6d9d43..2922913 100644
--- a/Doc/lib/libunicodedata.tex
+++ b/Doc/lib/libunicodedata.tex
@@ -71,6 +71,11 @@
   class is defined.
 \end{funcdesc}
 
+\begin{funcdesc}{east_asian_width}{unichr}
+  Returns the east asian width of assigned to the Unicode character
+  \var{unichr} as string.
+\end{funcdesc}
+
 \begin{funcdesc}{mirrored}{unichr}
   Returns the mirrored property of assigned to the Unicode character
   \var{unichr} as integer. Returns \code{1} if the character has been
@@ -123,4 +128,4 @@
 The version of the Unicode database used in this module.
 
 \versionadded{2.3}
-\end{datadesc}
\ No newline at end of file
+\end{datadesc}