Add `dkeprintln` macro

This macro functions exactly like `eprintln` while prepending the string
"dome-key: error: " to all messages. Allows us to give a uniform prefix
to printed rerrors.

Used the `println` macro as a reference:
https://doc.rust-lang.org/src/std/macros.rs.html#157-162

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 92399dc..6a08e4b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -37,6 +37,7 @@ mod config;
 mod errors;
 mod key_code;
 mod parser;
+mod prefix_println;
 mod trial;
 
 use parser::{Action, HeadphoneButton, MapAction, MapGroup, MapKind};