test_baseparser added. graf module updated.
BaseParser interface updated. New methods added.
test_baseparser updated. test_find_children_tiers_for_tier added.
Added methods to BaseParser. GrafWriter class renamed to Writer.
GrafParser class renamed to Parser.
tests updated.
Graf parts updated.
Graf parts updated.
elan module updated.
Methods in Writer class renamed. BaseParser class updated.
Methods of Writer class renamed.
New test added.
Script updated.
Elan module updated. Parser rewritten with the BaseParser interface.
Methods generate_graf_files and from_elan updated.
Elan module updated.
Script updated.
Typecraft module updated, elementtree in graf object.
Method from_typecraft updated.