Release 3.1.0

• feat: add browsingContext prop closes #133
• feat: add handleContainer prop to useReactCompareSliderRef return value closes #132
• test: add coverage for aria-label on handle container element (7db4b7c)
• fix: move aria-label to handle container button element, closes #130 (54a715c)
• docs(example): log lib version in example (0353d78)

Thanks to @martin-pettersson for their work on #133!