Finish trimming parseBiography() method

See 85b5298b
Restore the Xspf::expired() signal for API compatibility and mark it deprecated

See 8aa3edb4
Move m_userProxy elsewhere to preserve ABI compatibility
Restore RadioTuner::onXspfExpired() as a deprecated no-op
Merge pull request #13 from jstamp/abifixes

Abifixes