bump the library version to 2.0.1 and update the release log

Author: stephengold

gradle.properties

@@ -1,7 +1,7 @@
 ## configure Gradle properties for building the Jolt-JNI Project
 
 # Jolt-JNI version string
-jjVersion = 2.0.0
+jjVersion = 2.0.1
 
 ## default artifact ID (used when -Partifact= isn't specified on the command line)
 artifact = jolt-jni

release-log.md

@@ -1,6 +1,6 @@
-# release log for the Jolt-JNI project
+# Release log for the Jolt-JNI project
 
-## Version 2.0.0 released on 30 June 2025
+## Version 2.0.1 released on 30 June 2025
 
 + API changes:
   + Moved the `getVertexRadius()` and `setVertexRadius()` methods from