cleanup more warnings and deprecated function use

src/qrcode/encoder/encoder.rs

@@ -17,7 +17,6 @@
  * @author satorux@google.com (Satoru Takabayashi) - creator
  * @author dswitkin@google.com (Daniel Switkin) - ported from C++
  */
-
 use std::collections::HashMap;
 
 use encoding::EncodingRef;

src/qrcode/encoder/minimal_encoder.rs

@@ -713,7 +713,7 @@ impl Edge {
                 // }
                 size
             },
-            _encoders : encoders,
+            _encoders: encoders,
         }
         // this.mode = mode;
         // this.fromPosition = fromPosition;

src/qrcode/encoder/mod.rs

@@ -11,13 +11,13 @@ pub use byte_matrix::*;
 pub use minimal_encoder::*;
 pub use qr_code::*;
 
-#[cfg(test)]
-mod bit_vector_testcase;
 #[cfg(test)]
 mod EncoderTestCase;
 #[cfg(test)]
 mod MaskUtilTestCase;
 #[cfg(test)]
-mod matrix_util_testcase;
-#[cfg(test)]
 mod QRCodeTestCase;
+#[cfg(test)]
+mod bit_vector_testcase;
+#[cfg(test)]
+mod matrix_util_testcase;