Tested and fixed givens rotation
Merge branch 'Ben's-Branch'
Added invertUpperT
Starting CA GMRES
Started coding CA GMRES, realized I needed specialized functions for k = 0, coded said functions
First step of CA_GMRES works!!
Fixed some bugs in teh first step of CA_GMRES... still buggy
Added readSparseMatrix function, fixed CA matrix powers
Added TSQR with no Q calculation
main.cpp is ready to be PAPI-ed
Merge branch 'Ben's-Branch'