Converted Chrony Lib to a plain-old-java-library (the goal is to be able to write and run unit tests quickly).
Moved metrics calculations into separate classes.
Made sure that JUnit 4 tests can be run through gradle.
Building with SDK v19.
Added support for clearing the event repository.
Refactored to use better names.
Renamed tests.
Added the ability to back up the event repository to a JSON file.
Added the ability to restore the event repository from the backup.