feat & docs: Update of Spearmint v15 notes and Expanded custom hook, React.memo ,useMemo, useCallback, and Typescript coverage #154
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Description
-Updated Spearmint v15 notes. Updated list of implementations, and foreseen changes/considerations needed for the betterment of Spearmint.
-Expanded custom hooks, React.memo, useMemo, and useCallback coverage to help reduce unnecessary component rerenders
-Expanded Typescript coverage on React(Beta) module