Make the project easier to customize

[b1zzu]

Many users will need to customize some of the components of testx, and doing it only through the options could be limiting for many use cases.

What should we do then:

• more properties public so that the user can access them (like the db connection)
• more methods public so that the user can overwrite them
• smaller methods so that the user can overwrite smaller parts without rewriting or copy/paste part of the method