Merge pull request #2 from jopasserat/master

Refactor logger
Fix log level to fine.
Use elitism favorising the diversity.
Update h2.
Fix error in environment variable name.
Fix another type in env variable.
Use dynamic adaptation of operators.
List size is slow, optimise test of one element lists.
Refactor statistics task api.
Update stat task name.
Start clarifying the code.
Add implicit to array converters.
Import stat method into stochastic package.
Fix link target extraction in TarArchiver