Add no_std support, by adding an `std` feature (#281)

To make the library work as `no_std` we add an `std` feature which
is on by default. When it is off, we compile as `no_std` and make
parts of the API that require `std::io` conditional on the `std`
feature.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/buf/vec_deque.rs b/src/buf/vec_deque.rs
index 4464426..0b48b0a 100644
--- a/src/buf/vec_deque.rs
+++ b/src/buf/vec_deque.rs
@@ -1,4 +1,4 @@
-use std::collections::VecDeque;
+use alloc::collections::VecDeque;
 
 use super::Buf;