Merge pull request #38 from Detegr/update-postcard

Update postcard to 1.0.x

Author: thejpster

Cargo.lock

@@ -40,7 +40,7 @@ panic = "abort"
 neotron-common-bios = "0.8"
 pc-keyboard = "0.7"
 r0 = "1.0"
-postcard = "0.5"
+postcard = "1.0"
 serde = { version = "1.0", default-features = false }
 menu = "0.3"
 chrono = { version = "0.4", default-features = false }