No temp files plz
In middle of big change over

To distinguish between elements of a representation with the same
weight but multiplicity greater than 1, I am shifting over to using
Young tableau.
Use Young tableau in representation generation
Trying to get first non-vector case to work
Fixed representation.rb node_to_level_hash

Previously this was just setting @node_to_level_hash equal to the actual
level, when we want this to get the level "index", for comparison in node.rb
Proper Young tableau rules for each algebra
Fix logic in "generate_tree" of HighestWeightRep
Refactored young_tableau.rb

In preparation for proper handling of affinized Young Tableau, we need
to more carefully break the algorithm into nice units.

Still some problems with B_4 and C_4 algebra.