What's Changed
* feat: use gokart worker by hiro-o918 in https://github.com/m3dev/gokart/pull/402
* chore(deps): bump tornado from 6.4.1 to 6.4.2 by dependabot in https://github.com/m3dev/gokart/pull/407
* update readthedocs setting by kitagry in https://github.com/m3dev/gokart/pull/408
* doc: add sphinx-rtd-theme by kitagry in https://github.com/m3dev/gokart/pull/409
* doc: link mypy_plugin.rst from index.rst by kitagry in https://github.com/m3dev/gokart/pull/410
* feat: add serializable parameter by hiro-o918 in https://github.com/m3dev/gokart/pull/411
* docs: add description about gokart.SerializableParameter by hiro-o918 in https://github.com/m3dev/gokart/pull/412
* feat: make worker skip running task when it is completed by hiro-o918 in https://github.com/m3dev/gokart/pull/406
**Full Changelog**: https://github.com/m3dev/gokart/compare/1.7.0...1.8.0