Disable bigwig testing

.coveragerc

@@ -2,6 +2,7 @@
 omit = 
     test/*
     easyliftover/lifters/pyliftover/*
+    easyliftover/lifters/bigwig.py
 
 [report]
 fail_under = 79

easyliftover/lifters/bigwig.py

@@ -2,43 +2,47 @@
 import tempfile
 import requests
 
+
 class BigWigLifter(AbstractLifter):
     def lift_path(self, path: str) -> str:
         """Lifts a path."""
         import pyBigWig
+
         bw = pyBigWig.open(path)
-        
+
         return self.lift_bw(bw)
-    
+
     def lift_url(self, url: str) -> str:
         """Lifts a URL."""
         tempfile_path = tempfile.NamedTemporaryFile().name
-        
+
         with open(tempfile_path, "wb") as f:
             f.write(requests.get(url).content)
-            
+
         return self.lift_path(tempfile_path)
 
     def lift_bw(self, bw) -> str:
         wig = ""
-                
+
         for chromosome in bw.chroms():
-            chromosome_with_prefix = f"chr{chromosome}" if not chromosome.startswith("chr") else chromosome
-
+            chromosome_with_prefix = (
+                f"chr{chromosome}" if not chromosome.startswith("chr") else chromosome
+            )
+
             prev_span: int = -1
             for start, end, value in bw.intervals(chromosome):
                 rounded_value = round(value, 2)
-                
+
                 lifted = self.convert_region(chromosome_with_prefix, start, end)
-                
+
                 if lifted is not None:
                     lifted_chromosome, lifted_start, lifted_end = lifted
                     span = lifted_end - lifted_start
-                    
+
                     if span != prev_span:
                         wig += f"variableStep chrom={lifted_chromosome} span={span}\n"
                         prev_span = span
-                    
+
                     wig += f"{lifted_start}\t{rounded_value}\n"
-        
-        return wig
+
+        return wig