Merge pull request #254 from Nick-Pearson/fix-book-graphs #343

Job	Run time
Code Coverage	2m 30s
Clippy	3m 18s
Build Wasm Examples (wasm-yew-minimal)	52s
Build Examples (3d_charts)	27s
Build Examples (basic_charts)	26s
Rustfmt	13s
semver	1m 42s
Build Examples (custom_controls)	24s
Build Examples (financial_charts)	31s
Tests (ubuntu-latest)	2m 11s
Build Examples (images)	37s
Tests (windows-latest)	4m 24s
Build Examples (kaleido)	1m 16s
Build Examples (maps)	24s
Tests (macos-latest)	2m 23s
Build Examples (ndarray)	29s
Build Examples (scientific_charts)	29s
Build Examples (shapes)	23s
Build Examples (subplots)	30s
	23m 29s

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