Minor reorganization

rust/src/day_01.rs

@@ -1,13 +1,13 @@
 use std::io;
 use std::str::Chars;
 
-use day;
+use day::Day;
 
 pub struct Day01 {
     input: String,
 }
 
-impl day::Day for Day01 {
+impl Day for Day01 {
     fn new(input: String) -> Day01 {
         Day01 { input: input }
     }

rust/src/lib.rs

@@ -1,5 +1,5 @@
 pub use day::Day;
-pub use day_01::Day01;
-
 mod day;
+
+pub use day_01::Day01;
 mod day_01;