v1.4.0

• Rename KHL::HTTP::Response#error? to KHL::HTTP::Response#failed?

v1.3.0

• Remove KHL::Event

v1.2.1

• Add hash support for KHL::Message.parse

v1.2.0

• Fix 开黑啦 Webhook API

v1.1.0

• Add 开黑啦 Webhook API
• Add Event Wrapper

v1.0.1

• Fix params type

v1.0.0

• Add 开黑啦 HTTP API
• Add 开黑啦 WebSocket API
• Add GitHub CI