- now all process handler function take a TomoBase or a dict in input and return a TomoBase or a dict in output (defined by _set_return_dict).
- add unit test for process classes to check inputs and outputs.
- for now datalist and datawatcher still have a particular behavior.
- refactore some unit test to move them in core.process.test instead of core.test

Conflicts:
	.gitlab-ci.yml