Bump heapless to latest release

Author: sirhcel

src/11-usart/Cargo.toml

@@ -11,4 +11,4 @@ path = "auxiliary"
 
 [dependencies.heapless]
 default-features = false
-version = "0.3.7"
+version = "0.7.1"

src/11-usart/examples/echo.rs

@@ -3,14 +3,14 @@
 
 #[allow(unused_imports)]
 use aux11::{entry, iprint, iprintln};
-use heapless::{consts, Vec};
+use heapless::Vec;
 
 #[entry]
 fn main() -> ! {
     let (usart1, _mono_timer, _itm) = aux11::init();
 
     // A buffer with 32 bytes of capacity
-    let mut buffer: Vec<u8, consts::U32> = Vec::new();
+    let mut buffer: Vec<u8, 32> = Vec::new();
 
     loop {
         buffer.clear();

src/11-usart/examples/reverse-string.rs

@@ -4,14 +4,14 @@
 
 #[allow(unused_imports)]
 use aux11::{entry, iprint, iprintln};
-use heapless::{consts, Vec};
+use heapless::Vec;
 
 #[entry]
 fn main() -> ! {
     let (usart1, _mono_timer, _itm) = aux11::init();
 
     // A buffer with 32 bytes of capacity
-    let mut buffer: Vec<u8, consts::U32> = Vec::new();
+    let mut buffer: Vec<u8, 32> = Vec::new();
 
     loop {
         buffer.clear();