Add causal argumentation and sequence explanations (#22)

* refactoring

* refactored representation of causal arguments and theories

* minor fix

* adjusted causal statements

* moved to new package for causal reasoning

* added example

* some bugfixes

* some fixes

* updated dependencies

* implemented causal reasoner

* updated example

* added new example

* added new interface to causalReasoner

* minor fixes

* refactored causal statements

* added model representation for causal reasoning

* simplified causal reasoner implementation

* work on counterfactual reasoner

* incorporated interventions into causal reasoning

* implemented counterfactual reasoner

* adjusted examples

* bugfix

* added function to create twin atoms consistently

* updated examples for all reasoning types

* bugfix counterfactual reasoning

* update example

* added initial version of parser and writer

* minor fixes

* bugfix weighted argumentation

* added some todos

* added representations for explanations and reasoner

* added new simple causal reasoner

* todos

* minor

* bugfix StructuralCausalModel

* test(causal): add unit test for causal reasoners

The unit test shows an issue with `SimpleCausalReasoner`.

* minor changes

* added reasoners for sequence explanations

* fix: pom.xml for org-tweetyproject-arg-explanations

* fix: invalid Javadoc

* fix: disable test for know issue

* fix: set an updated version in pom.xml for org-tweetyproject-causal

* chore: comment out code for SimpleCausalReasoner

It has a known bug.
We do not make it accidentally usable.
But the commented-out code is kept for reference.

---------

Co-authored-by: larsbengel <77848869+larsbengel@users.noreply.github.com>
Co-authored-by: Lars Bengel <lars.bengel@fernuni-hagen.de>
Co-authored-by: matthiasthimm <matthias.thimm@mac.com>

Author: 3 people

org-tweetyproject-arg-deductive/src/main/java/org/tweetyproject/arg/deductive/util/RandomDeductiveKnowledgeBaseGenerator.java

@@ -89,7 +89,6 @@ public DeductiveKnowledgeBase next() {
         return kb;
     }
 
-
     /**
      * Description missing
      * @param <C> Description missing