fixup! Move blurb file utilities to blurb._blurb_file

AA-Turner · AA-Turner · commit 2bb192d86ff6 · 2025-08-13T02:27:57.000+01:00
diff --git a/src/blurb/_blurb_file.py b/src/blurb/_blurb_file.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 """
 
 The format of a blurb file:

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+from __future__ import annotations`
	`2`	`+`
`1`	`3`	`"""`
`2`	`4`
`3`	`5`	`The format of a blurb file:`