v0.1.1

release: 0.1.1 (#26)

## Summary

Release version 0.1.1

### Fixed

- Fix `int_signum!` macro incorrectly handling minimum signed integer
values (e.g., `i8::MIN`, `i16::MIN`, etc.)
- Fix `incircle` predicates performing subtractions outside signum
macros, causing potential overflow for integer types

### Added

- QuickCheck tests for i8 `orient2d`, `cmp_dist`, and `incircle`
predicates
- Benchmark for `incircle` predicate

### Changed

- Enable optimizations (opt-level = 2) for debug builds while
maintaining overflow checks
- Increase QuickCheck test iterations from 200-300 to 10,000 for more
thorough coverage