add first hash of xml parsing new implementation
add framework for detailed parsing fxns
integrate functions into debug printing
add itertools imports
return empty string on failed search
fix parsing of classes
fix asg_list parsing
implement cit_list parsing
implement rel_list parsing
implement inv_list parsing
temporary indexing fix on search results
add xml files for testing
removing 2012_1.xml because of test_xml_files
removing print statements
add dummy file to fool xml.sax parser
add unit test
remove unnecessary newlines
start asg_list
asg_list passes unittest
skip xml.sax validation of nonexistent schema