fix: $cache should be protected

Author: ekvedaras

CHANGELOG-1.x.md

@@ -0,0 +1,19 @@
+# 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]
+
+## [1.0.1] - 2020-08-30
+### Fixed
+- Make `BaseEnum::$cache` protected as it was left public.
+
+## [1.0.0] - 2020-08-30
+### Added
+- Array and illuminate collection implementations
+
+[Unreleased]:  https://github.com/ekvedaras/php-enum/compare/v1.0.1...HEAD
+[1.0.1]:  https://github.com/ekvedaras/php-enum/compare/v1.0.0...v1.0.1
+[1.0.0]:  https://github.com/ekvedaras/php-enum/releases/tag/v1.0.0

src/BaseEnum.php

@@ -15,7 +15,7 @@
 abstract class BaseEnum implements JsonSerializable
 {
     /** @var iterable|iterable[] */
-    public static $cache;
+    protected static $cache;
 
     /** @var int|string */
     protected $id;