- make error mod public

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tiffwrite"
-version = "2025.9.0"
+version = "2025.9.1"
 edition = "2024"
 rust-version = "1.85.1"
 authors = ["Wim Pomp <w.pomp@nki.nl>"]

src/lib.rs

@@ -1,6 +1,6 @@
 #[cfg(feature = "python")]
 mod py;
-mod error;
+pub mod error;
 
 use chrono::Utc;
 use colorcet::ColorMap;