Fix bug on states import

setup.py

@@ -8,7 +8,7 @@
 
 setup(
     name="pyvalem",
-    version="2.6",
+    version="2.6.1",
     description="A package for managing simple chemical species and states",
     long_description=long_description,
     long_description_content_type="text/x-rst",

src/pyvalem/states/__init__.py

@@ -12,3 +12,4 @@
 from .vibrational_state import VibrationalState, VibrationalStateError
 from .generic_excited_state import GenericExcitedState, GenericExcitedStateError
 from .key_value_pair import KeyValuePair, KeyValuePairError
+from .compound_LS_coupling import CompoundLSCoupling, CompoundLSCouplingError

tests/test_imports.py

@@ -0,0 +1,9 @@
+import unittest
+
+from pyvalem import states
+
+
+class StatesImportTest(unittest.TestCase):
+    def test_state_types_import(self):
+        self.assertIn("AtomicTermSymbol", states.__dict__)
+        self.assertIn("CompoundLSCoupling", states.__dict__)