[Fix] Add changelog and Update task name to IIGN (#229)

* add changelog

* polish changelog 0.3.0

* refine changelog formatting

* change all 'iion' to 'iign'

* Fix grammar in changelog.md for v0.3.0 release

Updated changelog for version 0.3.0 with highlights, new features, improvements, and bug fixes.

* Update changelog.md

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Co-authored-by: DuangZhu <shaohao9.zhu@gmail.com>

Bump version to 0.2.0

Bump version to 0.2.0

[FIX] Iros Challenge default config replaced agent (#64)

* fix default config replaced agent

* update server port

update challenge readme, clone release branch