Document changes for release 1.7.4

Author: iMichka

docs/history.rst

@@ -14,12 +14,21 @@ by setting up a git repositery on github, hosted along with gccxml.
 Version 1.7.4 (not yet released)
 --------------------------------
 
-1. Since this release, pyggcxml's version numbers do not contain the ``v``
-   prefix anymore. This was breaking distribution on PyPI (pypi.python.org).
+1. CV-qualified arrays were not being handled correctly by type traits
+   manipulations functions. For instance, 'int const[N]' would not be
+   detected as 'const'. Similar problems existed for volatile qualified
+   arrays too. See #35 for more details. A newer version of CastXML is
+   recommended (xml output version >= 1.138)
 
 2. Close subprocess stdout stream once value has been read.
    Fixes some warnings under python3.
 
+3. Since this release, pyggcxml's version numbers do not contain the ``v``
+   prefix anymore. This was breaking distribution on PyPI (pypi.python.org).
+
+Thanks to the following people for their contribution to this release:
+Ashish Sadanandan
+
 Version 1.7.3
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