v5.1.1: Update version of test framework so it would work on newer systems

This in a maintenance release. It updates .NET version in the HexCore.Test project, so the tests can be run on newer systems, like Apple Silicon macs.

v5.1.0: Zero heap allocation

In this release, the library was reworked to not cause any heap allocation and GC.

v5.0.0: Unity Support

• Added support for Unity

Fix serialization of coordinates

Removed readonly modifier from Coordinate2D and Coordinate3D so they can be serialized properly

v4.0.2: Maintanance release

• Added scripts for automated publishing to NuGet.org and GitHub packages
• Added some fancy badges to the README.md

v4.0.1: Added test coverage tool and improved test coverage

Also fixed a few minor bugs:

• TerrainType.Equals wasn't comparing two types correctly;
• Changed directions order in the Graph, so all ranges sorted in a way that makes more sense

v4.0.0: Documentation (#1)

This release includes new methods to work with 2D coordinates, documentation, and public interface refactoring: the internal structure is simplified, and everything moved to a single namespace.

v3.0.2

Removed obsolete things from README.md

v1.0.4

Add one more test for `IsInBounds`