post-release fixup

Author: stephengold

README.md

@@ -2,18 +2,20 @@
 
 The Jme3-utilities Project contains Java packages and assets, developed for
 sgold's jMonkeyEngine projects, which might prove useful in similar projects.
-It contains 9 sub-projects:
+It contains 8 sub-projects:
 
  1. heart: the `jme3-utilities-heart` library of core classes
  2. SkyControl: the `SkyControl` library for sky simulation
  3. moon-ccbysa: assets for a realistic Moon in `SkyControl`
- 4. debug: the `jme3-utilities-debug` library of debugging aids
- 5. tests: demos, examples, and test software
- 6. textures: generate textures used by `jme3-utilities-debug` and `SkyControl`
- 7. ui: the `jme3-utilities-ui` library for building user interfaces
- 8. nifty: the `jme3-utilities-nifty` library for using NiftyGUI user
+ 4. tests: demos, examples, and test software
+ 5. textures: generate textures used by `jme3-utilities-heart` and `SkyControl`
+ 6. ui: the `jme3-utilities-ui` library for building user interfaces
+ 7. nifty: the `jme3-utilities-nifty` library for using NiftyGUI user
     interfaces with jMonkeyEngine
- 9. x: the `jme3-utilities-x` library of experimental software
+ 8. x: the `jme3-utilities-x` library of experimental software
+
+The `jme3-utilities-debug` library, formerly a sub-project, has merged
+into the `jme3-utilities-heart` library.
 
 The `Minie` library, formerly a sub-project, is now a separate project
 at [GitHub](https://github.com/stephengold/Minie).

debug/release-notes.md

@@ -1,5 +1,8 @@
 # Release notes for the jme3-utilities-debug library and related tests
 
+The `jme3-utilities-debug` library, formerly a sub-project, merged
+into the `jme3-utilities-heart` library on 10 March 2019.
+
 ## Version 0.9.12 released on 10 March 2019
 
  + Made `Describer` and `Dumper` both `Cloneable`.

heart/release-notes.md

@@ -1,6 +1,6 @@
 # release notes for the jme3-utilities-heart library and related tests
 
-## Version 2.21.0 released on TBD
+## Version 2.21.0 released on 10 March 2019
 
  + The `jme3-utilities-debug` library merged into the
    `jme3-utilities-heart` library.

heart/src/main/java/jme3utilities/Misc.java

@@ -380,7 +380,7 @@ public static void setLoggingLevels(Level newLevel) {
      * @return project name, library name, branch, and revision
      */
     public static String version() {
-        return "jme3-utilities jme3-utilities-heart master $Rev: 2.21.0 $";
+        return "jme3-utilities jme3-utilities-heart master $Rev: 2.21.0+1 $";
     }
 
     /**