Bump version to 1.0.1 and add CHANGELOG

Patch release covering the MarshalLoader missing-file fix. No public
API changes; behavior change is limited to gracefully handling a
previously-unhandled error path (missing dump file -> empty record
set), matching QueryLoader's existing fallback.

Adds CHANGELOG.md (Keep a Changelog format) starting from v1.0.0 so
future entries have a home.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: AZQ1994

CHANGELOG.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/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.1] - 2026-05-18
+
+### Fixed
+- `MarshalLoader` no longer raises `Errno::ENOENT` when a dump file is missing; the corresponding table is loaded as an empty record set, matching `QueryLoader`'s fallback for unavailable tables.
+
+## [1.0.0] - 2025-12-26
+
+### Added
+- Initial public release.
+
+[1.0.1]: https://github.com/aktsk/simple_master/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/aktsk/simple_master/releases/tag/v1.0.0

lib/simple_master/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module SimpleMaster
-  VERSION = "1.0.0"
+  VERSION = "1.0.1"
 end