*   Fixes an integer overflow due to conversion to unsigned
    ([CVE-2021-37645](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37645))
*   Fixes a bad allocation error in `StringNGrams` caused by integer conversion
    ([CVE-2021-37646](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37646))
*   Fixes a null pointer dereference in `SparseTensorSliceDataset`

&:focus::-ms-value {\n    // Suppress the nested default white text on blue background highlight given to\n    // the selected option text when the (still closed) <select> receives focus\n    // in IE and (under certain conditions) Edge, as it looks bad and cannot be made to\n    // match the appearance of the native widget.\n    // See https://github.com/twbs/bootstrap/issues/19398.\n    color: $input-color;\n    background-color: $input-bg;\n  }\n}\n\n// Make file inputs better match text inputs...

&:focus::-ms-value {\n    // Suppress the nested default white text on blue background highlight given to\n    // the selected option text when the (still closed) <select> receives focus\n    // in IE and (under certain conditions) Edge, as it looks bad and cannot be made to\n    // match the appearance of the native widget.\n    // See https://github.com/twbs/bootstrap/issues/19398.\n    color: $input-color;\n    background-color: $input-bg;\n  }\n}\n\n// Make file inputs better match text inputs...