updated cobs and acknowledged const_fn stability

Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ansi_term"
@@ -58,9 +58,9 @@ dependencies = [
 
 [[package]]
 name = "cobs"
-version = "0.1.4"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c44be444fc7959957b0f331d596bafcfbbe30cbdf41665d1c40c68eda24137f6"
+checksum = "67ba02a97a2bd10f4b59b25c7973101c79642302776489e030cd13cdab09ed15"
 
 [[package]]
 name = "crc16"

framed/Cargo.toml

@@ -15,7 +15,7 @@ branch = "master"
 
 [dependencies]
 byteorder = { version = "^1.2.1", default-features = false }
-cobs = { version = "^0.1.4", default-features = false }
+cobs = { version = "^0.2.3", default-features = false }
 crc16 = "0.4.0"
 ref_slice = "^1.1.1"
 serde = { version = "^1.0", default-features = false }

framed/src/lib.rs

@@ -86,8 +86,6 @@
 
 #![cfg_attr(not(feature = "use_std"), no_std)]
 
-#![cfg_attr(feature = "use_nightly", feature(const_fn))]
-
 /// Macro const_fn! declares a function
 /// with `pub fn`       when feature "use_nightly" is disabled, and
 /// with `pub const fn` when feature "use_nightly" is enabled.