v1.4.2

Many thanks to @Faze-up and @chatman-media for contributing to this release.

• Fix word count actions to cache the Intl.Segmenter for non-primitive locales, preventing it from being recreated on every words, minWords, maxWords and notWords validation (pull request #1521)
• Fix flatten method to handle issue path keys that collide with Object.prototype members like toString instead of throwing a TypeError (pull request #1522)
• Fix intersect schema to merge object keys that collide with Object.prototype members like toString instead of failing to merge them (pull request #1522)