Object doesn't support property or method 'contains' in ie11

this line breaks in IE11: https://github.com/casesandberg/react-color/blob/bc9a0e1dc5d11b06c511a8e02a95bd85c7129f4b/src/components/common/Saturation.js#L23

because

so it would be nice to do one of the following:

1. warn users that this lib is not compatible with ie 11
2. either include a polyfill or change the method used to check for containment to something like this https://github.com/ljharb/document.contains/blob/main/implementation.js

Start at src/components/common/Saturation.js line 23, where the issue reports the IE11 failure, and compare the containment behavior with the linked document.contains implementation. Decide whether the project should warn about IE11 or address the compatibility issue. Done means the chosen behavior no longer produces the reported IE11 error, with compatibility checked against the reported case.

Written by the indexing model from the issue text.