Release 0.3.1

What's Changed

• Fix GA script by @BroKun in #307
• fix type annotation by @BroKun in #308
• feat(docs): refactory navigation and add mobile docs by @huxiamei in #310
• docs: add updates by @sunshinesmilelk in #312
• chore: update contributing doc&add welcome action by @sunshinesmilelk in #315
• chore: add pr label status action by @sunshinesmilelk in #317
• fix: use bot token in "pr-label-status.yml" workflow by @bubkoo in #318
• docs: full-fill the "Quick Start" section by @bubkoo in #316
• chore: automatically add labels based on branch name by @sunshinesmilelk in #320
• chore: add discord release action by @sunshinesmilelk in #322
• fix: pr label by title action by @sunshinesmilelk in #324
• docs: update discord link by @BroKun in #323
• fix: pr label action by @sunshinesmilelk in #328
• fix: improve markdown pre style& add libro guide notebook by @sunshinesmilelk in #327
• docs: add code of conduct by @sunshinesmilelk in #330
• docs: update readme by @sunshinesmilelk in #332
• chore: release by @difizor in #331

Full Changelog: 0.3.0...0.3.1