feat: remove broken assertions, add color test

[m-clare]

• Added a test for checking a few point color values.

[dancergraham]

Thanks for this - On this one I wonder whether we should follow the same approach as the recent Intensity value fix, disabling color normalisation.

When I export these color values into a text file (X, Y, Z, R, G, B, Intensity attached) using cloud compare I get Integer values. I think it makes sense for this library that the color values read back out should be as close as possible to the original written values or written using a common format and not normalised from 0 to 1 based on the range of values present in this pointcloud.

-0.32225147 -4.96385098 1.69413996 70 79 50 0.451430
-0.32057047 -4.93772888 1.69172692 65 74 45 0.473617
-0.31987011 -4.92671251 1.69447327 65 74 47 0.483413
-0.31996414 -4.92777967 1.70134044 68 75 44 0.492416
... 

[dancergraham]

pumpsA.txt

[dancergraham]

I think simply calling .normalise_color(false) after the normalise_intensity call should fix this behaviour

[dancergraham]

This would again be a breaking change bu I think it's the right choice for this lib

[dancergraham]

I think Actions should now run automatically on future PRs as you have already contributed !