Merge pull request #32 from jsonrpcx/feature/doctest_248

Update doctest to 2.4.8 (Closes #31)
Updated cpp-httplib to 0.10.6
Update nlhomann json to 3.10.5

Author: cinemast

CHANGELOG.md

@@ -5,6 +5,14 @@ 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).
 
+## [0.3.1] - 2022-04-19
+### Changed
+- Updated cpp-httplib to 0.10.6
+- Updated nlohmann/json to 3.10.5
+
+### Fixed
+- Updated doctest to 2.4.8 (#31)
+
 ## [0.3.0] - 2021-03-13
 ### Changed
 - Updated cpp-httplib to v0.8.4