style: Fix atom-block missing END and module rename

Author: Alan Christie

dm_job_utilities/misc.py renamed to dm_job_utilities/utils.py

@@ -3,6 +3,8 @@
 
 # Extracted 19th March 2024
 #
+# Use this new module with "from dm_job_utilities import utils"
+#
 # Includes style changes to align with the pre-existing modules
 # and the following modifications/changes: -
 #
@@ -36,6 +38,10 @@ def expand_path(path) -> None:
 def update_charge_flag_in_atom_block(atom_block) -> str:
     """See https://sourceforge.net/p/rdkit/mailman/message/36425493/
     """
+    # To simply fix the missing END, found during unit testing
+    # we simply add a line-feed to the input if it needs one.
+    if not atom_block.endswith("\n"):
+        atom_block += "\n"
     formatter = "{:>10s}" * 3 + "{:>2}{:>4s}" + "{:>3s}" * 11
     chgs = []  # list of charges
     lines = atom_block.split("\n")

test-data/atom-block-a-out.sdf

@@ -9,4 +9,5 @@
   1  2  1  0
   2  3  2  0
   2  4  1  0
-M  CHG  1   4  -1
+M  CHG  1   4  -1
+M  END

tests/test_misc.py renamed to tests/test_utils.py

@@ -2,7 +2,7 @@
 import pathlib
 import unittest
 
-from dm_job_utilities.misc import (
+from dm_job_utilities.utils import (
     calc_geometric_mean,
     is_type,
     read_delimiter,