Fix RelevantTo won't connect to any elements

Signed-off-by: Dan Yeaw <dan@yeaw.me>

gaphor/RAAML/stpa/__init__.py

@@ -2,3 +2,13 @@ from gaphor.RAAML.stpa.controlaction import ControlActionItem
 from gaphor.RAAML.stpa.operationalsituation import OperationalSituationItem
 from gaphor.RAAML.stpa.relationships import RelevantToItem
 from gaphor.RAAML.stpa.unsafecontrolaction import UnsafeControlActionItem
+
+# This need to be imported after RelevantToItem
+import gaphor.RAAML.stpa.connectors
+
+__all__ = [
+    "ControlActionItem",
+    "OperationalSituationItem",
+    "RelevantToItem",
+    "UnsafeControlActionItem",
+]

gaphor/RAAML/stpa/relationships.py

@@ -5,4 +5,5 @@ from gaphor.SysML.requirements.relationships import DirectedRelationshipProperty
 
 @represents(raaml.RelevantTo)
 class RelevantToItem(DirectedRelationshipPropertyPathItem):
+
     relation_type = "relevantTo"

pyproject.toml

@@ -126,7 +126,7 @@ use_parentheses = true
 line_length = 88
 known_third_party = ["cairo", "gaphas", "generic", "gi", "importlib_metadata", "pytest", "recommonmark", "tinycss2", "tomlkit", "typing_extensions"]
 skip = "flatpak,.venv,build,dist"
-skip_glob = "gaphor/diagram/general/__init__.py,gaphor/UML/__init__.py,gaphor/UML/*/__init__.py"
+skip_glob = "gaphor/diagram/general/__init__.py,gaphor/UML/__init__.py,gaphor/UML/*/__init__.py,gaphor/RAAML/stpa/__init__.py"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]