Add error module with crate's `Error` type.

Implement `Display`, `Error`, and various `FromError<T>` traits on
`Error`, allowing the use of `try!` on the various `Result` types in the
crate.

Note that currently the only error variants are those thrown from
a lower-level operation.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index f490df7..f7358b7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,3 +6,5 @@ mod macros;
 
 mod ffi;
 mod utils;
+
+pub mod error;