adding CHANGELOG

Signed-off-by: Anastas Dancha <anapsix@random.io>

Author: anapsix

CHANGELOG.md

@@ -0,0 +1,75 @@
+# 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]
+
+
+## [0.4.0] - 2021-02-17
+### Added
+- `CHANGELOG.md`
+- `K8SVAULT_CONTEXT` shell variable exported when new shell session is started,
+  which can be used in `PS1` to display current `k8s-vault` context
+- some spec tests
+
+### Changed
+- binary path in Docker image is not `/bin/k8s-vault`
+- `make version` now updates version in example config file
+- shard description updated to exclude special symbols
+- crystal version set to `~> 0.36.1`
+- moved argument processing into `run` method of `K8sVault` module
+- moved helper methods to `K8sVault` module
+- do not display error message when SSH forwarder process is no longer available
+
+### Fixed
+- formatting
+
+
+## [0.3.0] - 2021-01-19
+### Added
+- `example-config` cli option to bash completion
+
+### Changed
+- `k8s-vault.yaml` config format updated: `clusters` renamed to `contexts`,
+  since `.context[*].name` is supposed to match context name in `KUBECONFIG`
+- cli argument parsing logic, and error messages output
+
+
+## [0.2.2] - 2021-01-19
+### Added
+- cli option to output list of enabled contexts
+
+### Changed
+- bash completion no longer relies on external binaries (`jq`,`oq`)
+- where `colorize` is included
+
+
+## [0.2.1] - 2021-01-19
+### Added
+- GitHub Sponsor support
+
+### Changed
+- install only `--production` shards when building in Docker
+- upgraded to `kce v0.6.0`
+
+
+## [0.2.0] - 2021-01-19
+### Added
+- bash completion, from bash version of `k8s-vault`
+
+
+## [0.1.0] - 2021-01-19
+### Added
+- initial implementation
+
+
+[Unreleased]: https://github.com/anapsix/k8s-vault.cr/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/anapsix/k8s-vault.cr/compare/v0.3.0...v0.4.0
+[0.3.0]: https://github.com/anapsix/k8s-vault.cr/compare/v0.2.2...v0.3.0
+[0.2.2]: https://github.com/anapsix/k8s-vault.cr/compare/v0.2.1...v0.2.2
+[0.2.1]: https://github.com/anapsix/k8s-vault.cr/compare/v0.2.0...v0.2.1
+[0.2.0]: https://github.com/anapsix/k8s-vault.cr/compare/v0.1.0...v0.2.0
+[0.1.0]: https://github.com/anapsix/k8s-vault.cr/tree/v0.1.0