Prepare the ruby library for v1.5.0

Signed-off-by: Jacob Hull <jacob@planethull.com>

Author: jakedipity

CHANGELOG.md

@@ -1,7 +1,37 @@
 # Changelog
+All notable changes to this project will be documented in this file.
 
-[v1.4.2](https://github.com/logdna/ruby/pull/28) - 03-19-2020
-[v1.4.1](https://github.com/logdna/ruby/pull/26) -
-03-13-2020
-### Fixed:
-[Invalid log level issue](https://github.com/logdna/ruby/issues/24)
+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]
+## [v1.5.0] - 2021-01-29
+### Added
+- `request_size` option to control the upper limit of a request.
+- `retry_timeout` option to control the base timeout for retries.
+- `retry_max_attempts` option to control maximum number of retries.
+- `retry_max_jitter` option to control the maximum amount of jitter (random time added) for each tried request.
+
+### Changed
+- Set the minimum required ruby version to 2.5.0.
+
+### Fixed
+- The client sometimes blocking the main thread during requests.
+
+## [v1.4.2] - 2020-03-13
+### Fixed
+- Schedule flusher blocks main thread.
+
+## [v1.4.1] - 2020-03-19
+### Fixed
+- Missing level method causing invalid log level error.
+
+## [v1.4.0] - 2020-01-30
+### Added
+- Everything.
+
+[Unreleased]: https://github.com/logdna/ruby/compare/v1.5.0...master
+[v1.5.0]: https://github.com/logdna/ruby/compare/v1.4.2...v1.5.0
+[v1.4.2]: https://github.com/logdna/ruby/compare/v1.4.1...v1.4.2
+[v1.4.1]: https://github.com/logdna/ruby/compare/v1.4.0...v1.4.1
+[v1.4.0]: https://github.com/logdna/ruby/releases/tag/v1.4.0

lib/logdna/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module LogDNA
-  VERSION = "1.4.2"
+  VERSION = "1.5.0"
 end