fix dependency from #1571

Author: zm711

neo/test/rawiotest/test_neuralynxrawio.py

@@ -1,5 +1,4 @@
 import datetime
-import dateutil
 import unittest
 
 import os
@@ -390,6 +389,7 @@ def test_neuraview2(self):
 
     # left in for possible future header tests
     def check_dateutil_parse(self, hdrTxt, openPat, closePat, openDate, closeDate):
+        import dateutil
         mtch = openPat.search(hdrTxt)
         self.assertIsNotNone(mtch)
         dt = mtch.groupdict()

pyproject.toml

@@ -103,6 +103,7 @@ maxwell = ["h5py"]
 biocam = ["h5py"]
 med = ["dhn_med_py<2.0"] # ci failing with 2.0 test future version when stable
 plexon2 = ["zugbruecke>=0.2; sys_platform!='win32'", "wenv; sys_platform!='win32'"]
+neuralynx = ["python-dateutil"] 
 
 all = [
     "coverage",
@@ -126,6 +127,7 @@ all = [
     "tqdm",
     "wenv; sys_platform!='win32'",
     "zugbruecke>=0.2; sys_platform!='win32'",
+    "python-dateutil",
 ]
 # we do not include 'stfio' in 'all' as it is not pip installable