ruff formatting fixes (#210)

sparkles/core.py

@@ -3,6 +3,7 @@
 """
 Preliminary review of ACA catalogs selected by proseco.
 """
+
 import gzip
 import io
 import pickle

sparkles/find_er_catalog.py

@@ -63,6 +63,7 @@
      from the star fields that appear to be the best based on available stars.
    3. Prioritize by the order of attitudes passed in to the function.
 """
+
 import agasc
 import numpy as np
 import proseco.characteristics_guide as GUIDE

sparkles/roll_optimize.py

@@ -3,6 +3,7 @@
 """
 Roll optimization during preliminary review of ACA catalogs.
 """
+
 import warnings
 from copy import deepcopy