Note in README, that some functions may report false negative when being traspiled

[char0n]

Is your feature request related to a problem? Please describe.

Let's add section to README, warning users of the library that some functions in the library may report false negative or behave unexpectedly when functions are used on transpiled code.

Describe the solution you'd like

Notice in README file

Describe alternatives you've considered

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Additional context

#1386