- Mirrors ConcurrentSkipListSet's behavior accurately, adds snapshot() which allows obtaining a point in time snapshot of the Set, with a better return type than toArray()'s Object[].

- document updates
- MurMur3Hash finalizaition added.

Author: Claude4.0s

README.md

@@ -489,7 +489,7 @@ System.setProperty("io.debug.detailed.paths", "true");
 | [ConcurrentSet](userguide.md#concurrentset) | Thread-safe Set supporting null elements.                                                                                                                                                                                                                                        |
 | [ConcurrentNavigableSetNullSafe](userguide.md#concurrentnavigablesetnullsafe) | Thread-safe `NavigableSet` supporting null elements.                                                                                                                                                                                                                             |
 | [ClassValueSet](userguide.md#classvalueset) | High-performance Set optimized for fast `Class` membership testing using JVM-optimized `ClassValue`.                                                                                                                                                                             |
-| [IntervalSet](userguide.md#intervalset) | Thread-safe interval set with O(log n) performance, auto-merge intervals (or not - optional), and smart boundary handling for 20+ types.                                                                                                                                         |
+| [IntervalSet](userguide.md#intervalset) | Thread-safe interval set with O(log n) performance, automatically merges intervals, smart boundary handling for 20+ types, and you can add your own.                                                                                                                             |
 | **Maps** |                                                                                                                                                                                                                                                                                  |
 | [CompactMap](userguide.md#compactmap) | Memory-efficient Map that dynamically adapts its storage structure based on size.                                                                                                                                                                                                |
 | [CaseInsensitiveMap](userguide.md#caseinsensitivemap) | A `Map` wrapper that provides case-insensitive, case-retentive keys and inherits the features of the wrapped map (e.g., thread-safety from `ConcurrentMap` types, multi-key support from `MultiKeyMap`, sorted, thread-safe, allow nulls from `ConcurrentNavigableMapNullSafe`). |