Fix bug that leads to not showing the help if an option is not present.
Fix bug in initializing of the test instance.
Merge pull request #288 from TheTorProject/fix/pre_setup

Fix bug that leads to not showing the help if an option is not present.
Update changelog for 1.0.0
Merge branch 'master' of github.com:TheTorProject/ooni-probe

* 'master' of github.com:TheTorProject/ooni-probe:
  Fix bug that leads to not showing the help if an option is not present.
Merge branch 'master' into feature/better_testing

* master:
  Update changelog for 1.0.0
  Fix bug in initializing of the test instance.
  Fix bug that leads to not showing the help if an option is not present.

Conflicts:
	ooni/tasks.py