test for failing import: document with itemList
Fixed: Consistent naming of functions

removeChildrenWithName -> removeChildrenByName

Fixes #71
added frbr files to xcode project
Merge pull request #77 from zolaemil/frbr

Added missing frbr files to xcode project
New: MeiAttribute Python Unit test
New: Python copy constructor for MeiAttribute
New: MeiAttribute C++ Unit Test
Fixed: the xml: prefix is not stripped off attributes

LibXML2 seems to strip the xml: prefix off any attributes with this prefix.

This commit fixes this by looking at the prefix object and, if it is `xml` will explicitly append this prefix to the attribute name.
Updated Xcode Project file
New character entity encoding method in ManuScript output.
Formatting
Merge branch 'master' of https://github.com/DDMAL/libmei into merge-orig