Remove inverse calculations on import by pre-computing values

There were a few cases where we were performing inverse matrix
calculations on import of files. These are now pre-computed for
efficiency.

Author: facelessuser

coloraide/algebra.py

@@ -5272,7 +5272,7 @@ def fnnls(
     A fast non-negativity-constrained least squares
     https://www.researchgate.net/publication/230554373_A_Fast_Non-negativity-constrained_Least_Squares_Algorithm
     Rasmus Bro and Sijmen De Jong
-    Journal of Chemometrics. 11, 393–401 (1997)
+    Journal of Chemometrics. 11, 393-401 (1997)
     """
 
     m, n = _quick_shape(A)

coloraide/spaces/sucs.py

@@ -14,11 +14,16 @@
 
 # Iab transformation matrices
 TO_IAB = [
-    alg.divide([200.0, 100.0, 5.0], 3.05, dims=alg.D1_SC),
+    # `alg.divide([200.0, 100.0, 5.0], 3.05, dims=alg.D1_SC),`
+    [65.57377049180329, 32.786885245901644, 1.639344262295082],
     [430.0, -470.0, 40.0],
     [49.0, 49.0, -98.0]
 ]
-FROM_IAB = alg.inv(TO_IAB)
+FROM_IAB = [
+    [0.01, 0.0007468123861566483, 0.0004721014088695587],
+    [0.009999999999999998, -0.0014754098360655738, -0.00043492806958849117],
+    [0.009999999999999997, -0.0003642987249544624, -0.010185494963012527]
+]
 
 
 def sucs_to_xyz(ich: Vector) -> Vector:

coloraide/spaces/zcam.py

@@ -36,7 +36,11 @@
     [3.524, -4.066708, 0.542708],
     [0.199076, 1.096799, -1.295875]
 ]
-IZAZBZ_TO_LMS_P = alg.inv(LMS_P_TO_IZAZBZ)
+IZAZBZ_TO_LMS_P = [
+    [1.0, 0.2772100865430786, 0.11609463231223774],
+    [1.0, 0.0, 0.0],
+    [1.0, 0.042585801245220344, -0.75384457989992]
+]
 
 SURROUND = {
     'dark': (0.8, 0.525, 0.8),