Changed Edge name to Link
midway of cleanning PyLint errors

Signed-off-by: SoulAssassin <aalexandre.grande@hotmail.com>
Merge branch 'master' of https://github.com/SoulAssassin/PyDes.git

Conflicts:
	src/des/_entities.py
	src/des/_factory.py
	src/tests/test_event.py
Fixed conflicts