Merge pull request #5425 from MDAnalysis/flake-line-length

use max-line-length= 79 for flake8 (same as for black)

Author: orbeckst

.flake8

@@ -1,2 +1,2 @@
 [flake8]
-max-line-length = 88
+max-line-length = 79

testsuite/MDAnalysisTests/core/test_atomgroup.py

@@ -1362,7 +1362,9 @@ def test_wrap(self, ag, wrap, ref, method_name):
             # relevant, so we get the signs to flip any anti-parallel vectors before
             # comparing the two results arrays
             signs = np.sign(np.einsum("ij,ij->i", result, ref[method_name]))
-            assert_almost_equal(result * signs[:, np.newaxis], ref[method_name], self.prec)
+            assert_almost_equal(
+                result * signs[:, np.newaxis], ref[method_name], self.prec
+            )
         else:
             assert_almost_equal(result, ref[method_name], self.prec)