Refactors the underlying data type to optimize performance

unit-tests/matrix-test-timings.txt

@@ -1,14 +1,14 @@
-Addition: 0.55 s
-Subtraction: 0.548 s
-Multiplication: 3.404 s
-Scalar Multiplication: 0.453 s
-Element Multiply: 0.347 s
-Element Divide: 0.347 s
-Minor Matrix: 0.44 s
-Determinant: 0.251 s
-Matrix of Minors: 1.044 s
-Invert: 0.262 s
-Transpose: 0.26 s
-Normalize: 0.333 s
-GET ROW: 0.683 s
-GET COLUMN: 0.427 s
+Addition: 0.419 s
+Subtraction: 0.421 s
+Multiplication: 3.297 s
+Scalar Multiplication: 0.329 s
+Element Multiply: 0.306 s
+Element Divide: 0.302 s
+Minor Matrix: 0.331 s
+Determinant: 0.177 s
+Matrix of Minors: 0.766 s
+Invert: 0.183 s
+Transpose: 0.215 s
+Normalize: 0.315 s
+GET ROW: 0.008 s
+GET COLUMN: 0.43 s