[3.15] gh-60729: Add missing version{added,changed} directives to the wave docs (GH-159644) (#160079)

(cherry picked from commit 69d0f96)

Co-authored-by: bdieterm <119257544+bdieterm@users.noreply.github.com>
Co-authored-by: Stan Ulbrych <stan@python.org>

Author: 3 people

Doc/library/wave.rst

@@ -74,11 +74,15 @@ The :mod:`!wave` module defines the following function and exception:
 
    Format code for IEEE floating-point audio.
 
+   .. versionadded:: 3.15
+
 
 .. data:: WAVE_FORMAT_EXTENSIBLE
 
    Format code for WAVE extensible headers.
 
+   .. versionadded:: 3.12
+
 
 .. _wave-read-objects:
 
@@ -281,6 +285,8 @@ Wave_write Objects
       When setting :data:`WAVE_FORMAT_IEEE_FLOAT`, the sample width must be
       4 or 8 bytes.
 
+      .. versionadded:: 3.15
+
 
    .. method:: getformat()
 
@@ -300,6 +306,9 @@ Wave_write Objects
 
       For ``format=WAVE_FORMAT_IEEE_FLOAT``, *sampwidth* must be 4 or 8.
 
+      .. versionchanged:: 3.15
+         Added optional item *format* to the *tuple*.
+
 
    .. method:: getparams()