Added new check that verifies .toml files in the repo, and updated black version.

examples/antenna_like_GSSI_1500_fs.in

@@ -8,4 +8,4 @@ from toolboxes.GPRAntennaModels.GSSI import antenna_like_GSSI_1500
 gssi_objects = antenna_like_GSSI_1500(0.125, 0.094, 0.100, resolution=0.001)
 for obj in gssi_objects:
     print(obj.__str__())
-#end_python:
+#end_python: