Prepare 18.1.0 release.

Author: HexDecimal

CHANGELOG.md

@@ -6,9 +6,11 @@ This project adheres to [Semantic Versioning](https://semver.org/) since version
 
 ## [Unreleased]
 
+## [18.1.0] - 2025-05-05
+
 ### Added
 
-- `tcod.path.path2d` computes a path for the most basic cases.
+- `tcod.path.path2d` to compute paths for the most basic cases.
 
 ### Fixed
 

tcod/path.py

@@ -1465,7 +1465,7 @@ def path2d(  # noqa: C901, PLR0912, PLR0913
                [3, 0],
                [3, 1]], dtype=int...)
 
-    .. versionadded:: Unreleased
+    .. versionadded:: 18.1
     """
     cost = np.copy(cost)  # Copy array to later modify nodes to be always reachable