Changes

Summary

1. [sto12-tsk44] Adds unfollow event to Entity User (details)

Commit 68e0adc50805b953d3bc58e62997e7b0fddf7c77 by ifcunharro [sto12-tsk44] Adds unfollow event to Entity User
	domain/src/test/java/es/uvigo/esei/dgss/teama/letta/entities/UserTest.java (diff)
	domain/src/main/java/es/uvigo/esei/dgss/teama/letta/entities/User.java (diff)