3.15.4 - 19 January 2015

General:

  * Implement ability to "rewind" and "fast forward" during SayAll

  * Add support for presentation of mathematical alphanumeric symbols and
    operators

  * Fix for bug 742293 - Application-specific shortcut rebinding doesn't
    persist

  * Eliminate some false positives in the label inference code

  * Fix several bugs related to sayAll

  * Improve support for presentation of nested tables during structural
    navigation

New and updated translations (THANKS EVERYONE!!!):

    el            Greek                       Dimitris Spingos
    es            Spanish                     Daniel Mustieles
    eu            Basque                      Inaki Larranaga Murgoitio
    pt_BR         Brazilian Portuguese        Rafael Ferreira
    sl            Slovenian                   Matej Urbančič
    tr            Turkish                     Muhammet Kara

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