Merge pull request #49 from limix/nov23FixSamples

Fix sample files by moving them to a new GitHub repro.

bgen_reader/_example.py

@@ -18,7 +18,7 @@
 def example_filepath(filename: str):
     import requests
 
-    url = "https://bgen-examples.s3.amazonaws.com"
+    url = "https://github.com/fastlmm/bgen-sample-files/blob/main"
 
     if filename not in _filenames:
         raise ValueError(f"Unknown filename {filename}.")