Make most operator traits take their input by value and change TransferFn to TransferFn<T>

[Ogeon]

This makes all of the traits have the same convention, modeled after the core::ops traits, and leaves any cloning to the caller. I considered adding an Outputtype too, but that can go into a separate pass.

Breaking Change

Almost every trait that takes parameters have changed here, so that may be breaking for non-Copy types. The clamp_self method is also gone.

[github-actions]

Benchmark for 0d7a57a

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Cie family/lab to lch	3.5±0.03µs	3.6±0.14µs	-2.78%
Cie family/lab to xyz	964.2±15.61ns	974.1±7.31ns	-1.02%
Cie family/lch to lab	2.5±0.03µs	2.6±0.08µs	-3.85%
Cie family/linsrgb to xyz	3.9±0.06µs	3.9±0.05µs	0.00%
Cie family/xyz to lab	10.7±0.23µs	11.2±0.94µs	-4.46%
Cie family/xyz to yxy	750.3±22.61ns	735.2±7.73ns	+2.05%
Cie family/yxy to xyz	622.6±10.83ns	680.8±8.03ns	-8.55%
Matrix functions/matrix_inverse	13.4±0.21ns	13.0±0.24ns	+3.08%
Matrix functions/multiply_3x3	11.0±0.21ns	11.4±0.15ns	-3.51%
Matrix functions/multiply_rgb_to_xyz	4.8±0.07ns	4.8±0.07ns	0.00%
Matrix functions/multiply_xyz	4.9±0.07ns	5.0±0.20ns	-2.00%
Matrix functions/multiply_xyz_to_rgb	4.8±0.07ns	4.8±0.09ns	0.00%
Matrix functions/rgb_to_xyz_matrix	25.4±0.35ns	25.6±0.25ns	-0.78%
Rgb family/hsl to hsv	689.3±11.26ns	790.6±10.95ns	-12.81%
Rgb family/hsl to linear hsl	9.8±0.15µs	9.6±0.14µs	+2.08%
Rgb family/hsl to rgb	2.5±0.05µs	2.5±0.03µs	0.00%
Rgb family/hsv to hsl	1135.3±16.47ns	1148.2±16.81ns	-1.12%
Rgb family/hsv to hwb	281.2±9.33ns	268.4±7.73ns	+4.77%
Rgb family/hsv to linear hsv	9.1±0.13µs	9.1±0.12µs	0.00%
Rgb family/hsv to rgb	2.5±0.03µs	2.5±0.05µs	0.00%
Rgb family/hwb to hsv	569.8±8.28ns	561.7±7.81ns	+1.44%
Rgb family/hwb to linear hwb	10.9±0.16µs	11.0±0.48µs	-0.91%
Rgb family/linear hsl to hsl	10.3±0.14µs	10.2±0.18µs	+0.98%
Rgb family/linear hsv to hsv	9.6±0.21µs	9.8±0.10µs	-2.04%
Rgb family/linear hwb to hwb	11.9±0.13µs	12.2±0.38µs	-2.46%
Rgb family/linsrgb to rgb	4.7±0.08µs	4.7±0.06µs	0.00%
Rgb family/linsrgb_f32 to rgb_u8	6.4±0.08µs	6.4±0.10µs	0.00%
Rgb family/rgb to hsl	880.7±14.32ns	881.3±14.46ns	-0.07%
Rgb family/rgb to hsv	679.3±6.31ns	675.4±10.20ns	+0.58%
Rgb family/rgb to linsrgb	5.1±0.05µs	5.1±0.08µs	0.00%
Rgb family/rgb_u8 to linsrgb_f32	5.4±0.09µs	5.4±0.10µs	0.00%
Rgb family/xyz to linsrgb	9.0±0.07µs	8.4±0.08µs	+7.14%

[Ogeon]

I'm going to go through the traits again and do some more focused improvements. These were just some fixes and low hanging fruit they had in common.

bors r+

[bors]

Build succeeded:

• ci