Added link to Weblate from translatable strings once the translator mode

is activated in the workspace settings. This required the addition of a
new lib (in source form) for a SipHash implementation.

siphash-zackehh/src/test/java/com/zackehh/siphash/SipHashConstantsTest.java

@@ -0,0 +1,32 @@
+package com.zackehh.siphash;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Modifier;
+
+public class SipHashConstantsTest {
+
+    @Test
+    public void ensureAllConstants() throws Exception {
+        Assert.assertEquals(SipHashConstants.INITIAL_V0, 0x736f6d6570736575L);
+        Assert.assertEquals(SipHashConstants.INITIAL_V1, 0x646f72616e646f6dL);
+        Assert.assertEquals(SipHashConstants.INITIAL_V2, 0x6c7967656e657261L);
+        Assert.assertEquals(SipHashConstants.INITIAL_V3, 0x7465646279746573L);
+        Assert.assertEquals(SipHashConstants.DEFAULT_C, 2);
+        Assert.assertEquals(SipHashConstants.DEFAULT_D, 4);
+        Assert.assertEquals(SipHashConstants.DEFAULT_CASE, SipHashCase.LOWER);
+        Assert.assertEquals(SipHashConstants.DEFAULT_PADDING, false);
+    }
+
+    @Test(expectedExceptions = InvocationTargetException.class)
+    public void ensureCannotInstance() throws Exception {
+        Constructor<SipHashConstants> ctor = SipHashConstants.class.getDeclaredConstructor();
+        ctor.setAccessible(true);
+        Assert.assertTrue(Modifier.isPrivate(ctor.getModifiers()));
+        ctor.newInstance();
+    }
+
+}