bump library version to 8.6.0 and update release-notes.md

Author: stephengold

HeartLibrary/release-notes.md

@@ -1,5 +1,15 @@
 # release log for the Heart Library and related tests
 
+## Version 8.6.0 released on TBD
+
++ Added 4 new methods:
+  + `MyMath.transform()`
+  + `MyMath.transformInverse()` for a `Vector3f`
+  + `MyQuaternion.rotateInverse()`
+  + `Validate.standardAngle()`
++ When normalizing a `Quaternion` or `Vector3f`, bypass division if the norm is
+  approximately equal to 1.
+
 ## Version 8.5.0 released on 29 May 2023
 
 Added 2 new methods:

HeartLibrary/src/main/java/jme3utilities/Heart.java

@@ -531,7 +531,7 @@ public static void setLoggingLevels(Level newLevel) {
      * @return project name, library name, branch, and revision
      */
     public static String version() {
-        return "Heart Heart master $Rev: 8.5.1-SNAPSHOT $";
+        return "Heart Heart master $Rev: 8.6.0 $";
     }
 
     /**

build.gradle

@@ -7,7 +7,7 @@ plugins {
 ext {
     // current versions of libraries:
     jmeTarget = '' // distinguish non-JME libraries built for specific JME releases
-    heartVersion = '8.5.1' + jmeTarget + '-SNAPSHOT'
+    heartVersion = '8.6.0' + jmeTarget
     jme3Version = '3.6.0-stable'
 }