Upgrade to latest Rust

Still missing a few Beta features, but it compiles!

- Copy requires Clone
- current_dir returns a Path now
- num_cpus moved to a crate

1 files changed, 1 insertions, 1 deletions

diff --git a/src/column.rs b/src/column.rs
index 51ea239..677a917 100644
--- a/src/column.rs
+++ b/src/column.rs
@@ -21,7 +21,7 @@ pub enum Column {
 
 /// Each column can pick its own **Alignment**. Usually, numbers are
 /// right-aligned, and text is left-aligned.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum Alignment {
     Left, Right,
 }