Using sep-pjw as substitute for sep

SEP is not maintained anymore, so I'm using Peter J Watson's sep fork for source extraction.

astroalign.py

@@ -561,7 +561,7 @@ def register(
 
 def _find_sources(img, detection_sigma=5, min_area=5, mask=None):
     """Return sources (x, y) sorted by brightness."""
-    import sep
+    import sep_pjw as sep
 
     image = img.astype("float32")
     bkg = sep.Background(image, mask=mask)

pyproject.toml

@@ -10,7 +10,7 @@ maintainers = [{ name = "Martin Beroiz", email = "[email protected]" }]
 readme = "README.md"
 dynamic = ["version"]
 requires-python = ">=3.7"
-dependencies = ["numpy>=1.17", "scipy>=0.15", "scikit-image", "sep"]
+dependencies = ["numpy>=1.17", "scipy>=0.15", "scikit-image", "sep-pjw"]
 license = { file = "LICENSE.txt" }
 keywords = [
     "astronomy",

tests/test_align.py

@@ -265,7 +265,7 @@ def compare_image(self, the_image):
         """Return the fraction of sources found in the reference image"""
         # pixel comparison is not good, doesn't work. Compare catalogs.
         full_algn = the_image.astype("float32")
-        import sep
+        import sep_pjw as sep
 
         bkg = sep.Background(full_algn)
         thresh = 5.0 * bkg.globalrms
@@ -724,7 +724,7 @@ def compare_image(self, the_image):
         """Return the fraction of sources found in the reference image"""
         # pixel comparison is not good, doesn't work. Compare catalogs.
         full_algn = np.mean(the_image, axis=-1, dtype="float32")
-        import sep
+        import sep_pjw as sep
 
         bkg = sep.Background(full_algn)
         thresh = 5.0 * bkg.globalrms