The changes module could crash upon no detected file types (Fixes #68).

The sub list flattening happening after all the "changes threads" have
run should be happening before the len(self.commits) check, not after.

gitinspector/changes.py

@@ -211,9 +211,9 @@ class Changes:
 		for i in range(0, NUM_THREADS):
 			__thread_lock__.acquire()
 
-		if len(self.commits) > 0:
-			self.commits = [item for sublist in self.commits for item in sublist]
+		self.commits = [item for sublist in self.commits for item in sublist]
 
+		if len(self.commits) > 0:
 			if interval.has_interval() and len(self.commits) > 0:
 				interval.set_ref(self.commits[-1].sha)