[feature] Enable rayon (parallelism) by default

This doesn't much affect smaller, typical-sized courses, but it's about
a 3-4x speedup on cptr006.gpx when running with -t 1000.

Author: mshroyer

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
           - features: "full-geolib"
           - features: "cli"
           - features: "floor"
-          - features: "cli,floor,rayon"
+          - features: "cli,floor"
           - features: "floor,rayon"
 
     runs-on: ubuntu-latest
@@ -111,7 +111,7 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Setup rust
-        run: rustup toolchain install --profile minimal -c rustfmt,clippy nightly && rustup default nightly
+        run: rustup toolchain install --profile minimal -c rustfmt nightly && rustup default nightly
 
       - name: rustfmt
         run: cargo fmt --check

Cargo.toml

@@ -52,7 +52,7 @@ csv = "1.3.1"
 serde = { version = "1.0.219", features = ["derive"] }
 
 [features]
-default = ["cli", "floor"]
+default = ["cli", "floor", "rayon"]
 cli = ["dep:anyhow", "dep:clap", "dep:clap-cargo", "dep:sys-locale", "dep:tracing-subscriber"]
 floor = []
 full-geolib = []