Generalized Densification to SetSparse
Renamed CRSSparsity::patternUnion -> CRSSparsity::patternCombine
Reorganized patternCombine
Introduced new patternCombine
Simplified patternCombine
Simplified patternCombine (2)
Refactored Matrix::matrix_matrix
Refactored BinaryMX, removed SparseSparseOp
Refactored BinaryMX, made templated
Refactored BinaryMX: Removed code duplication