v0.1.1

v0.1.1 - 2026-01-31

• to_unit() now returns double-precision converted values and preserves fractional precision (prevents integer truncation of sub-unit times).
• Durations are recorded as std::chrono::duration<double, std::nano> to preserve fractional-nanosecond precision.
• Fixed local variable shadowing in Benchmark::run by renaming temporary timing/result variables.
• Added deterministic unit tests for to_unit and BenchmarkResult::calculate_statistics.
• Added edge-case tests: empty lambda, death tests for zero warmup/iterations, exception propagation, and time-unit ordering.
• test/CMakeLists.txt now fetches GoogleTest automatically if not present; tests are split into two targets:
  • perf_lite_unit_tests (fast deterministic tests) — labeled fast for CI
  • perf_lite_benchmarks (benchmark-style timing tests) — labeled benchmark
• Added GitHub Actions workflow .github/workflows/ci-fast-tests.yml to run only the fast labeled tests in CI.