Test different modes of loading the alpha v2 library

Manual tests:

With the default import functionPlot from 'function-plot'
With the dist bundled file import functionPlot from 'function-plot/dist/function-plot'
With web workers enabled within a plain HTML webpage
With web workers enabled in a bundler (Webpack)

With web workers

import functionPlot from 'function-plot'
functionPlot.withWebWorkers(8)

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