Avoid self-loops in CHANGED_TOGETHER_WITH edges

Author: JohT

cypher/GitLog/Add_CHANGED_TOGETHER_WITH_relationships_to_code_files.cypher

@@ -4,6 +4,7 @@ MATCH (firstGitFile:Git&File&!Repository)-[gitChange:CHANGED_TOGETHER_WITH]-(sec
 WHERE elementId(firstGitFile) < elementId(secondGitFile)
 MATCH (firstGitFile)-[:RESOLVES_TO]->(firstCodeFile:File&!Git&!Repository)
 MATCH (secondGitFile)-[:RESOLVES_TO]->(secondCodeFile:File&!Git&!Repository)
+WHERE firstGitFile <> secondGitFile
  CALL (firstCodeFile, secondCodeFile, gitChange) {
        MERGE (firstCodeFile)-[pairwiseChange:CHANGED_TOGETHER_WITH]-(secondCodeFile)
          SET pairwiseChange = properties(gitChange)

cypher/GitLog/Add_CHANGED_TOGETHER_WITH_relationships_to_git_files.cypher

@@ -39,6 +39,7 @@ WHERE updateCommitCount > 2
  WITH *
      ,fileCombination[0] AS firstFile
      ,fileCombination[1] AS secondFile
+ WHERE firstFile <> secondFile
  WITH *
      // Get the lowest number of git update commits of both files (file pair) 
      ,CASE WHEN firstFile.updateCommitCount < secondFile.updateCommitCount