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update todo
update with junit last version
use property instead of  compiler declaration in maven pom
Merge branch 'empty' into step3

Conflicts:
	pom.xml
Merge branch 'step3' into step3-solution

Conflicts:
	src/main/java/fr/xebia/xke/java8/step3/UserService.java
use assertJ instead of fest assert
update for assertj
update for assertj
Merge branch 'step3-solution' of https://github.com/ibeauvais/PlayWithJava8 into step3-solution