v4.3 Adding Date manipulation function and test
v4.2 example of concurrence
v4.1 example of parallelism
v4 for concurrence
v3.3 resolving Cycle-3
v3.2 Resolving Cycle-2
v3.1 Resolving Monad
v3 Stream (y otros functors y otros monads) para interactuar con cole… …cciones
v2.2 Resolving Monad
v2.1 Resolving time