steady working on qrcode encoder

src/qrcode/decoder/mode.rs

@@ -24,7 +24,7 @@ use super::Version;
  *
  * @author Sean Owen
  */
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Copy, Clone)]
 pub enum Mode {
     TERMINATOR,           //(new int[]{0, 0, 0}, 0x00), // Not really a mode...
     NUMERIC,              //(new int[]{10, 12, 14}, 0x01),

src/qrcode/decoder/version.rs

@@ -22,6 +22,8 @@ use super::{ErrorCorrectionLevel, FormatInformation};
 
 use lazy_static::lazy_static;
 
+pub type VersionRef = &'static Version;
+
 lazy_static! {
     static ref VERSIONS: Vec<Version> = Version::buildVersions();
 }