What's Changed
* Update train.mdx with Wandb configuration and requirements by MervinPraison in https://github.com/MervinPraison/PraisonAI/pull/372
* Bump version to 2.0.70 and update configuration handling by MervinPraison in https://github.com/MervinPraison/PraisonAI/pull/373
**Full Changelog**: https://github.com/MervinPraison/PraisonAI/compare/2.0.69...2.0.70