feat: v0.2.0 - Performance optimization and distribution pipeline

- Implemented multi-threaded directory traversal using ignore::WalkParallel
- Added dynamic thread allocation for balanced CPU utilization
- Refactored core logic to single-pass, in-memory tree construction (O(N))
- Added --compare, --units, and --precision flags
- Established SCM-neutral distribution pipeline (Makefile, release.sh, Homebrew)
- Comprehensive updates to README.md, MANUAL.md, and CHANGELOG.md
- Decoupled from SCM-specific workflows

scripts/release.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+set -e
+
+VERSION=$(grep '^version =' Cargo.toml | cut -d '"' -f 2)
+DIST_DIR="dist/v$VERSION"
+
+echo "Building release assets for sized v$VERSION..."
+
+# 1. Clean and Prepare
+rm -rf "$DIST_DIR"
+mkdir -p "$DIST_DIR"
+
+# 2. Build Release Binary
+cargo build --release
+
+# 3. Generate Man Page
+cargo run --release -- --generate-man-page "$DIST_DIR"
+
+# 4. Generate Completions
+cargo run --release -- --completions bash > "$DIST_DIR/sized.bash"
+cargo run --release -- --completions zsh > "$DIST_DIR/_sized"
+cargo run --release -- --completions fish > "$DIST_DIR/sized.fish"
+
+# 5. Build Debian Package (if cargo-deb is installed)
+if command -v cargo-deb &> /dev/null; then
+    echo "Building Debian package..."
+    # On macOS, we use --no-strip to avoid 'unrecognized option: --strip-unneeded'
+    # and --no-build because we already built the release binary.
+    cargo deb --no-build --no-strip
+    cp target/debian/*.deb "$DIST_DIR/"
+    echo "Note: .deb package contains the binary for $(uname -s)-$(uname -m)"
+else
+    echo "Warning: cargo-deb not found. Skipping .deb packaging."
+fi
+
+# 6. Build Alpine Package (Placeholder/Hook)
+# Note: For real .apk building, one usually uses a docker container or abuild.
+# This serves as a reminder for Alpine users.
+if [ -f "APKBUILD" ] && command -v abuild &> /dev/null; then
+    echo "Building Alpine package..."
+    abuild -r
+fi
+
+# 7. Create General Release Tarball
+echo "Creating release tarball..."
+tar -czf "dist/sized-v$VERSION-$(uname -s)-$(uname -m).tar.gz" -C "$DIST_DIR" .
+
+# 8. Copy Binary
+cp target/release/sized "$DIST_DIR/"
+
+echo "Success! Assets are ready in $DIST_DIR"
+ls -F "$DIST_DIR"
+echo "Tarball: dist/sized-v$VERSION-$(uname -s)-$(uname -m).tar.gz"