Mysuru

• make load_tables_vectors default
• change notice to reflect new default
• update examples and data to reflect lt
• replace use of 2 dimensional arrays with matrices
• more efficient construction of rownam and z1
• replace use of length(k) with G
• replace use of various inefficient uses of diag() (e.g. with Vhat)
• improved spacing of code for legibility
• make leontief default method