gridsquare

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [0.1.0] - 2024-01-XX

### Added
- Initial release
- `Gridsquare.encode/2` and `Gridsquare.encode/3` functions for encoding latitude/longitude to Maidenhead grid references
- `Gridsquare.decode/1` function for decoding grid references to coordinates
- `Gridsquare.new/1` function for creating GridSquare structs
- Support for extended precision (6-20 characters)
- Comprehensive documentation and examples
- Test coverage for all functions

### Features
- Maidenhead Locator System grid square encoding/decoding
- Variable precision support (6-20 character grid references)
- Coordinate normalization and bounds checking
- Base 18, 10, and 24 conversion utilities
- Extended precision calculation with alternating base pairs