Removed unnecessary casts in EBML::Element
Added return for find
Added a few testcases
Merge remote-tracking branch 'correct/taglib2' into taglib2
RIFF::WAV::Tag() returns TagUnion
Merge pull request #211 from TsudaKageyu/tagunion

RIFF::WAV::Tag() returns TagUnion
Interface change of List::find() and contains()
Merge pull request #212 from TsudaKageyu/list

Interface change of List::find() and contains()
Completed testcases and fixed some bugs, that were found because of the them
Corrected indentation
Merge pull request #208 from Rachus/taglib2

A few Matroska testcases and an issue