Import necessary functions in tests

tests/test_indexing.py

@@ -5,7 +5,10 @@
 from pytest import raises
 import numpy as np
 
-from lisainstrument.indexing import *
+from lisainstrument.indexing import index2mosa, mosa2index, transform, rotate, reflect
+from lisainstrument.indexing import mosa2sc, sc2leftdistant, sc2rightdistant, sc2leftmosa, sc2rightmosa
+from lisainstrument.indexing import sc2bothmosas, mosa2distant, mosa2adjacent
+from lisainstrument.indexing import empty_mosa, empty_sc, ones_mosa, ones_sc, zeros_mosa, zeros_sc, full_mosa, full_sc
 
 
 def test_index2mosa():