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

Formula/sized.rb

@@ -0,0 +1,23 @@
+class Sized < Formula
+  desc "A modern, fast, and concurrent disk usage analyzer"
+  homepage "https://gitea.speelman.ca/gamertan/sized"
+  url "https://gitea.speelman.ca/gamertan/sized/archive/v0.2.0.tar.gz"
+  sha256 "REPLACE_WITH_ACTUAL_SHA256" # Run `shasum -a 256 v0.2.0.tar.gz` after upload
+  license "MIT"
+
+  depends_on "rust" => :build
+
+  def install
+    system "cargo", "install", *std_cargo_args
+
+    # Install man page
+    man1.install "sized.1"
+
+    # Generate and install shell completions
+    generate_completions_from_executable(bin/"sized", "--completions")
+  end
+
+  test do
+    system "#{bin}/sized", "--version"
+  end
+end