Change the first item in the configuration

It is hardcoded as the "reference" implementation

README.md

@@ -14,6 +14,8 @@ Our Rust implementation can be found at https://github.com/neuromorphicsystems/s
 - Rust - https://rustup.rs
 - Meson - https://mesonbuild.com
 
+The C++ and Rust implementations will be built when either benchmark (accuracy or speed) is run for the first time.
+
 ## Accuracy
 
 Accuracy calculates the maximum propagation error of each implementation with respect to the reference implementation (`cpp-afspc`) over the full catalogue (1 minute timestep over 24 hours).

configuration.json

@@ -5,8 +5,8 @@
         {"current_dir": "cpp/target", "command": "meson", "args": ["compile"]}
     ],
     "executables": [
-        {"id": "cpp", "path": "cpp/target/propagate"},
         {"id": "cpp-afspc", "path": "cpp/target/propagate_afspc"},
+        {"id": "cpp", "path": "cpp/target/propagate"},
         {"id": "cpp-fastmath", "path": "cpp/target/propagate_fastmath"},
         {"id": "cpp-afspc-fastmath", "path": "cpp/target/propagate_afspc_fastmath"},
         {"id": "rust", "path": "rust/target/release/propagate"},