Support for connected speech in Spanish phonetic translator

We added the support for connected speech in Spanish phonetic translator.

Here are few examples of the phonetic transcriptions obtained with this new option:

tu universidad
tu.ni.βɛɾ.si.ˈðað  (connected speech)
tu u.ni.βɛɾ.si.ˈðað

está aquí
ɛs.ˈta.ˈki  (connected speech)
ɛs.ˈta a.ˈki