Simpler usage

Better enapsulation of BinTree classes allows simpler usage of collection classes without need to cast to the more general interfaces.

Now available in Maven Central

Changed version number to 2.0.0 to show this fact.

Maven dependency:

<dependency>
  <groupId>io.github.grillbaer</groupId>
  <artifactId>persistentds</artifactId>
  <version>2.0.0</version>
</dependency>

Initial Release

Basic features in data-structures with > 95% unit test coverage. Still many missing methods that the common java collections provide. Not yet in production.