1. Add documentation to YChaos by [Shashank Sharma](https://github.com/shashankrnr32)
1. Minor Bug Fixes for MachineTarget Executor by [Alfin S Thomas](https://github.com/AlfinST), [Shashank Sharma](https://github.com/shashankrnr32)
1. Add Machine Target Executor to connect to targets and execute attack by Shashank Sharma
1. Add Coordinator module by [Vijay Babu](https://github.com/vijaybabu4589)
1. Introduce Event Hooks for circling back useful information from core components to client
code (CLI) by [Shashank Sharma](https://github.com/shashankrnr32)
1. Add System state verification to YChaos by [Shashank Sharma](https://github.com/shashankrnr32)
- Add Python Module Verification Module.
- Add HTTP Verification Plugin.
- Add `verify` subcommand to YChaos CLI.
- Add Screwdriver job verification to YChaos (Beta).
1. Add Chaos Agent Definition to YChaos by [Shashank Sharma](https://github.com/shashankrnr32)
- Add system agents.
- Add Ping disable agent.
- Add IPTables block agent by [Rahul R](https://github.com/r-r-2)
- Add Traffic block agent.
- Add DNS Block agent.
- Add Contrib agent that enables users to write their own agents.
1. Add CLI subcommands for testplan validation, manual, agent to YChaos by
[Shashank Sharma](https://github.com/shashankrnr32), [Vijay Babu](https://github.com/vijaybabu4589)
1. Add Testplan Schema and schema documentation to YChaos by [Shashank Sharma](https://github.com/shashankrnr32)
1. Other improvements (CI/Documentation/Package/Dev)
- Add Optional dependency handler by [Shashank Sharma](https://github.com/shashankrnr32)
- Add Logging module for YChaos by [Vijay Babu](https://github.com/vijaybabu4589)
- Add Log Agent Lifecycle decorator by [Shashank Sharma](https://github.com/shashankrnr32)
- Allow custom log file via CLI by [Shashank Sharma](https://github.com/shashankrnr32)