1.0.1

• deepMerge: Explicit default merge strategies; consistent behavior when options are omitted.
• simpleMerge: Map and Set are no longer treated as plain objects; they are replaced by the source value.
• Docs: Fixed JSDoc formatting for merge strategy options.
• Code: Use array destructuring instead of sources.shift() for recursion.
• Tests: Coverage for date strategies (keepEarlier/keepLater), custom merge functions, and circular references.