[libxml++] Created tag 2.91.3

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '2.91.3' was created.

Tagger: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date: Tue Jan 12 10:18:48 2016 +0100

    2.91.3

Changes since the last tag '2.91.2':

Kjell Ahlstedt (10):
      Remove trailing blanks
      Examples: More use of override keyword
      configure.ac: Use -Wsuggest-override with --enable-warnings=fatal
      Use scoped enums (enum class) instead of unscoped enums
      Use using instead of typedef
      Add some noexcept
      NonCopyable: Make it obvious that it can't be moved
      Document: Test for nullptr in a constructor
      DomParser: Make operator bool() explicit
      2.91.3

Murray Cumming (1):
      SchemaValidatorBase: Use the override keyword.

Renu Tyagi (1):
      Element: Remove redundant null check