The check length macro was exported for use by other libraries.

This was done to make buffer length checks common through out.

src/macros.rs

@@ -6,6 +6,7 @@
 
 /// Handles the testing of a buffers size and returning the correct
 /// error if a buffer does not have the correct amount of bytes.
+#[macro_export]
 macro_rules! check_length
 {
    // This tests for the buffers length being less than the min value.