album feature completed. Some modifications on xsd.
album test passed.
Merge pull request #5 from AntonioCollarino/mbTest

Mb test
Merge pull request #6 from barvince5/musicb

Musicb
added new behavior to detect missing or incorrect albums or artists.
Merge pull request #8 from AntonioCollarino/albumTest

added new behavior to detect missing or incorrect albums or artists.
Merge pull request #7 from barvince5/musicb

Minor bugfix in FindAlbumArtist
fixed bug: empty title in FindAlbumArtist class.
Merge pull request #9 from AntonioCollarino/mfe

fixed bug: empty title in FindAlbumArtist class.
added extra attempt to recover artist name for wrong tags
added extra attempt to detect album data
album and artist optimized and tested.
Merge pull request #10 from AntonioCollarino/mfe

test album and artist
new packages configuration. Added creation date in each xsd. Added new
custom exception.
Merge pull request #11 from AntonioCollarino/mfe

new packages configuration. Added creation date in each xsd. Added new
Added shared buffer: AudioFileToDo
Concurrent part completed and tested.
Merge pull request #12 from AntonioCollarino/mfe

Concurrent part completed.
added file length (seconds) for song.
Merge pull request #13 from AntonioCollarino/mfe

added file length (seconds) for song.