Export the inflate error publicly

It encapsulates the implementation detail of holding a miniz_oxide
status within. The derived traits are not too extensive for other
possible representations as well.

src/lib.rs

@@ -14,7 +14,7 @@ pub mod decoder;
 pub mod encoder;
 mod error;
 
-pub use self::error::{TiffError, TiffFormatError, TiffResult, TiffUnsupportedError};
+pub use self::error::{InflateError, TiffError, TiffFormatError, TiffResult, TiffUnsupportedError};
 
 /// An enumeration over supported color types and their bit depths
 #[derive(Copy, PartialEq, Eq, Debug, Clone, Hash)]