chore: initial release v0.1.0

Runtime-agnostic oneshot broadcast channel for Rust.

.gitignore

@@ -0,0 +1,22 @@
+.claude
+/target
+Cargo.lock
+
+# Mutation testing artifacts
+/mutants.out
+/mutants.out.old
+mutation_history.json
+mutants-report.html
+
+# Benchmark output
+/target/criterion
+
+# Coverage reports
+coverage/
+lcov.info
+*.profraw
+*.profdata
+
+# OS files
+.DS_Store
+Thumbs.db