add->operator_addition in fvar/matrix
add->operator_division in fvar/matrix
added more tests to exp for fvar/matrix
added more tests to log for fvar/matrix
multiply->operator_multiplication in fvar/matrix
subtract->operator_subtraction in fvar/matrix
removed subtract_test
added more tests to prod for fvar/matrix
added compilation of fvar/matrix tests for easy testing
added block_test for fvar/matrix
add diagonal_test for fvar/matrix
added transpose_test for fvar/matrix