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We need to update our README.md file before the 1.0 release.

Hi

First of all, thank you very much for this module, it really helped for me.

I'm having an issue of users always attempting to enter (-) mark when they want to add negative value to input, unfortunately, now users have to add numbers and enter (-) mark towards the end, which is not practical.

Any suggestion or help to sort this out?

Thanks

Steps to reproduce

yarn prepare

Expected behaviour

doesn't include tests and other unnecessary files on the lib/ folder.

Actual behavior

when build, tests and snapshots are including in the lib/ folder, increasing the package size on npm.