A more efficient way of creating GSS nodes
Unpacked SPPF visualization. Some problems with nested packed nodes.
Fixing the problems with visualizing separate parse trees in an SPPF
Updating
Bug fix
Renaming and some comments
Adding more test cases
Test case for hidden left recursion added.
Bug fix: ambiguous intermediate nodes flattening solved.
Bug fix
Visualizaton updated.
GSS nodes that only need nonterminal heads and input indices added.
Updating the createGSSNode method
Updating lookup tables.
Removing level-based processing of descriptors from the new branch.
Remaining changes
Meged
The pop method updated.
All test cases pass.
Test case updated.