Release 0.2.9

What's Changed

• refine tos by @ZQlQZ in #189
• refine(docs): update docs by @yaozheng-fang in #180
• fix upload by @ZQlQZ in #193
• fix: increase the limit on the number of span attributes by @zakahan in #194
• fix(tracing): convert tool schema dump from python to json by @yaozheng-fang in #195
• feat/mem0: support mem0 as LTM by @cuericlee in #197
• refine tos_url by @ZQlQZ in #196
• feat(kb): enhance upload methods with metadata support and add KnowledgebaseEntry model by @Fengrui-Liu in #190
• chore(model): add user agent request header to model request by @yaozheng-fang in #199
• fix: veadk tutorial & tls header by @zakahan in #201
• Fea/seedream 4 0 by @doraemonlove in #200
• docs: troubleshooting by @zakahan in #205
• fix(evaluate): evaluate function add evalset by @floritange in #204
• fix(tls): fix tls create instance header and error code by @yaozheng-fang in #203
• fix(docs): remove useless code in evaluation.md by @yaozheng-fang in #206

Full Changelog: 0.2.8...0.2.9