Provide reinitialize protected methods for inheritors

src/main/kotlin/ru/dbotthepony/kommons/random/JSF32Random.kt

@@ -29,6 +29,15 @@ open class JSF32Random protected constructor(
 	 * [https://www.pcg-random.org/posts/bob-jenkins-small-prng-passes-practrand.html](https://www.pcg-random.org/posts/bob-jenkins-small-prng-passes-practrand.html)
 	 */
 	constructor(seed: Int) : this(SEED0_INIT, seed, seed, seed, null) {
+		reinitialize(seed)
+	}
+
+	protected fun reinitialize(seed: Int) {
+		s0 = SEED0_INIT
+		s1 = seed
+		s2 = seed
+		s3 = seed
+
 		for (i in 0 until 20)
 			round()
 	}

src/main/kotlin/ru/dbotthepony/kommons/random/JSF64Random.kt

@@ -1,5 +1,6 @@
 package ru.dbotthepony.kommons.random
 
+import ru.dbotthepony.kommons.random.JSF32Random.Companion
 import java.util.random.RandomGenerator
 
 /**
@@ -34,6 +35,15 @@ open class JSF64Random(
 	 * [https://www.pcg-random.org/posts/bob-jenkins-small-prng-passes-practrand.html](https://www.pcg-random.org/posts/bob-jenkins-small-prng-passes-practrand.html)
 	 */
 	constructor(seed: Long) : this(SEED0_INIT, seed, seed, seed, null) {
+		reinitialize(seed)
+	}
+
+	protected fun reinitialize(seed: Long) {
+		s0 = SEED0_INIT
+		s1 = seed
+		s2 = seed
+		s3 = seed
+
 		for (i in 0 until 20)
 			round()
 	}

src/main/kotlin/ru/dbotthepony/kommons/random/ShishuaRandom.kt

@@ -27,6 +27,22 @@ open class ShishuaRandom() : RandomGenerator {
 		engine.initialize(longArrayOf(rng.nextLong(), rng.nextLong(), rng.nextLong(), rng.nextLong()))
 	}
 
+	protected fun reinitialize(seed: Long) {
+		val rng = PCG32Random(seed)
+		engine.initialize(longArrayOf(rng.nextLong(), rng.nextLong(), rng.nextLong(), rng.nextLong()))
+		index = 16
+	}
+
+	protected fun reinitialize(seed0: Long, seed1: Long, seed2: Long, seed3: Long) {
+		engine.initialize(longArrayOf(seed0, seed1, seed2, seed3))
+		index = 16
+	}
+
+	protected fun reinitialize(seed: LongArray) {
+		engine.initialize(seed)
+		index = 16
+	}
+
 	protected fun round(): Long {
 		if (index == 16) {
 			index = 0