I did notice it. However I am currently still waiting for the stable release.
The Idea is to get some knowledge what works well and what not with the OH1 instance and this library.
I will change all my rules to this setup and then see what’s good.
Migrating it to OH2 should then be not so much of an effort.
However for additional input I am always open and if you have a good idea just let me know. 
Right now I’m just poking around, but no real progress. I had hopes that I could finally start moving from OH1 to OH2, but I also noticed what @villaRob found in the jython + OH2 thread. 
So it seems to me the scriptable automation needs some more work.
Created new Module: FiFo (First in first out).
EasyRule.FiFo( "CalShow{}", 5)
EasyRule.FiFo( "CalWGName0", "CalWGName1", "CalWGName2", "CalWGName3")
Normal FiFo-Stuff:
2017-06-30 16:43:17.562 [INFO ] [runtime.busevents ] - CalShow0 received command 51
2017-06-30 16:43:17.563 [INFO ] [runtime.busevents ] - CalShow4 state updated to 55
2017-06-30 16:43:17.563 [INFO ] [runtime.busevents ] - CalShow3 state updated to 54
2017-06-30 16:43:17.563 [INFO ] [runtime.busevents ] - CalShow2 state updated to 53
2017-06-30 16:43:17.564 [INFO ] [runtime.busevents ] - CalShow1 state updated to 52