IE issues, Object.assign is not a function

Hi, using this on IE 11 and below gives me the error:
`Object.assign is not a function`

Can you please add in the polyfill workaround for this.
Was this meant to be fixed here?:
https://github.com/1rosehip/jplist-es6/issues/3

I see 1 instance of:
`this.settings=Object.assign({} `
in jplist.min.js

The issue points to a specific line in jplist.min.js using Object.assign, which lacks IE11 support. First, examine the source code to locate the Object.assign usage and understand the build process. Then, research polyfill options or consider using a Babel plugin to transpile Object.assign for compatibility. Verify the fix by testing in an IE11 environment or using a polyfill like core-js.

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