more compact led representations

[DavJCosby]

See #65

Analyzing the performance tradeoffs of this design decision

[github-actions]

Benchmark for bc111e2

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Test	Base	PR	%
quirky_trail	78.8±1.05ms	127.1±1.30ms	+61.29%
ripples	48.4±11.12ms	44.7±13.56ms	-7.64%

[github-actions]

Benchmark for 3c71ce6

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Test	Base	PR	%
quirky_trail	75.7±0.22ms	127.4±0.95ms	+68.30%
ripples	47.6±11.35ms	40.6±14.26ms	-14.71%

[github-actions]

Benchmark for 235fa5a

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Test	Base	PR	%
quirky_trail	75.9±0.99ms	126.5±0.99ms	+66.67%
ripples	45.5±12.43ms	45.6±9.16ms	+0.22%

[github-actions]

Benchmark for 309c7ca

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Test	Base	PR	%
quirky_trail	77.0±0.27ms	126.2±0.91ms	+63.90%
ripples	50.6±6.04ms	45.4±11.65ms	-10.28%

[github-actions]

Benchmark for 67a8d7a

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Test	Base	PR	%
quirky_trail	75.6±0.21ms	77.5±0.58ms	+2.51%
ripples	44.3±11.89ms	51.5±8.25ms	+16.25%

[github-actions]

Benchmark for 0c76624

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Test	Base	PR	%
quirky_trail	75.8±0.71ms	78.6±0.78ms	+3.69%
ripples	43.4±13.14ms	42.6±12.90ms	-1.84%