Make offline_js_sources pub #653

Job	Run time
Rustfmt	14s
Clippy	46s
semver	51s
Tests (windows-latest)	3m 41s
Code Coverage	21s
Build Wasm Examples (callback-example)	57s
Tests (macos-latest)	2m 44s
Tests (ubuntu-latest)	2m 32s
Build Wasm Examples (basic)	56s
Build Book	1m 40s
Build Examples (custom_controls)	35s
Build Examples (3d_charts)	32s
Build Examples (customization)	34s
Build Examples (financial_charts)	32s
Build Examples (subplots)	33s
Build Examples (basic_charts)	33s
Build Examples (kaleido)	1m 26s
Build Examples (maps)	44s
Build Examples (ndarray)	32s
Build Examples (images)	47s
Build Examples (shapes)	32s
Build Examples (scientific_charts)	31s
Build Examples (themes)	34s
	23m 7s

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