Some neat picks

[zimond]

This PR adds two modifications:

1. Add NaiveDateTime to Value conversion
2. Use local dependencies of dao and codegen. This is important because currently rustorm depends on crate.io distributed dao & codegen. This makes depending on the git branch impossible. Thus generally considered as anti-pattern.

By the way, [replace] is not used when rustorm is introduced as a lib dependency. So it's also removed.

[ivanceras]

My setup is rustorm is a part of another bigger project diwata hence the replace is working on my end. This change would make rustorm be used independently.

Thank you for the PRs

[zimond]

@ivanceras hey, after the new release I realized that codegen is also using hard-coded version of dao. A PR is too heavy for this. Maybe you could change that too, thanks

[zimond]

@ivanceras also please release a new version of rustorm-dao, thanks