• Do not ignore exceptions when invalid XML is passed
• Raise RuntimeError if parsing fails
• Add an option to ignore UTF-8 encoding errors, fixes
• Use proper XPath to detect track elements in XML
• Fix handling of non-existent files
• Fix tests with libmediainfo ≥ 18.08
• Try to load libmediainfo from the module folder

Depends on D4654

Signed-off-by: Pierre-Yves <pyu@riseup.net>

Unit tests are OK