Made member package private to get access in unit test
Added toString method to make messages from failed unit tests easier to understand
Added javadoc. This is based on reading the code and I hope I understood the purpose right.
Changed test to not be dependent on Iteration order of HashMap. Fixes problem with compiling with Java 8
Added one more assert
Updated release notes
Merge branch 'issue141_fails_on_JDK8' of https://github.com/nlnwa/openwayback into nlnwa-issue141_fails_on_JDK8
Merge branch 'nlnwa-issue141_fails_on_JDK8'