chore: prepare v0.2.1 release

Author: jtdowney

CHANGELOG.md

@@ -5,6 +5,12 @@ 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).
 
+## [0.2.1] - 2026-02-26
+
+### Changed
+
+- Replaced panics with user-friendly error messages for invalid templates and missing files
+
 ## [0.2.0] - 2026-02-26
 
 ### Added
@@ -47,6 +53,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Jinja2 template rendering with environment variables
 - `split` filter for processing delimited values
 
+[0.2.1]: https://github.com/jtdowney/rsubst/releases/tag/v0.2.1
 [0.2.0]: https://github.com/jtdowney/rsubst/releases/tag/v0.2.0
 [0.1.4]: https://github.com/jtdowney/rsubst/releases/tag/v0.1.4
 [0.1.3]: https://github.com/jtdowney/rsubst/releases/tag/v0.1.3

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rsubst"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2024"
 license = "MIT"
 authors = ["John Downey <jdowney@gmail.com>"]