Deprecate kaleido #643

Job	Run time
Rustfmt	19s
Clippy	39s
Build Wasm Examples (basic)	37s
Build Wasm Examples (callback-example)	38s
semver	23s
Build Book	36s
Tests (ubuntu-latest)	37s
Code Coverage	9s
Tests (windows-latest)	22s
Tests (macos-latest)	25s
Build Examples (images)	36s
Build Examples (kaleido)	37s
Build Examples (3d_charts)	32s
Build Examples (basic_charts)	31s
Build Examples (customization)	26s
Build Examples (ndarray)	30s
Build Examples (maps)	37s
Build Examples (custom_controls)	27s
Build Examples (shapes)	26s
Build Examples (subplots)	34s
Build Examples (themes)	25s
Build Examples (scientific_charts)	37s
Build Examples (financial_charts)	27s
Build Examples (static_export)	38s
	12m 8s

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