Fix script reference, found in a submodule of the same name as the package. (#28)

* Fix script reference, found in a submodule of the same name as the package. Fixes #26.

* Add test capturing missed expectation. Ref #26.

Author: jaraco

cherry_picker/test.py

@@ -930,3 +930,7 @@ def test_abort_cherry_pick_success(
         cherry_picker.abort_cherry_pick()
 
     assert get_state() == WORKFLOW_STATES.REMOVED_BACKPORT_BRANCH
+
+
+def test_cli_invoked():
+    subprocess.check_call('cherry_picker --help'.split())

pyproject.toml

@@ -16,7 +16,7 @@ requires-python = ">=3.6"
 
 
 [tool.flit.scripts]
-cherry_picker = "cherry_picker:cherry_pick_cli"
+cherry_picker = "cherry_picker.cherry_picker:cherry_pick_cli"
 
 [tool.flit.metadata.requires-extra]
 dev = ["pytest"]