Here are some migration information for version 0.3.x to 0.4.x.

Version 0.4.x focuses primarily on cleaning up naming conventions and decoupling `sea-query` to enable certain `#[derive(Fields)]` functionalities even without the `with-sea-query` feature.

> Note: The latest version is currently on the `rc` stream (e.g., `0.4.0-rc.1`), as sea-query `0.31.0` is still in `rc`. It will become the full `0.4.0` release once sea-query `0.31` is released.

Key changes include:

- The `HasFields` trait is now used for the common `#[derive(Fields)]` and provides `field_names() -> &'static [&'static str]` and `field_refs...` to access `rel` and `name` information.
- `HasSeaFields` is the trait that implements the `sea-query` related functions. It is still generated by `#[derive(Fields)]` when the `with-sea-query` feature is enabled.
- Naming within `HasSeaFields` has been cleaned up.
- The `#[field(...)]` naming convention has been cleaned up (replacing `table` with `rel`), similar to the struct `#[modql(rel...)]`.

| v0.3.x                                                | v0.4.x                                                                |
|-------------------------------------------------------|-----------------------------------------------------------------------|
| **Refactor HasFields without sea-query dependencies** |                                                                       |
| `field::HasFields::field_names()`                     | `field::HasFields::field_names()`                                     |
|                                                       | `field::HasFields::field_refs()` with new `FieldRef` struct           |
| **Rename Field/s to SeaField/s**                      |                                                                       |
| `field::Field`                                        | `field::SeaField`                                                     |
|                                                       | `SeaField::new(iden, value)` both have `impl into..` so, no `.into()` |
| `field::Fields`                                       | `field::SeaFields`                                                    |
| `#[derive(FieldValue)]`                               | `#[derive(SeaFieldValue)]`                                            |
| **Refactor HasFields to HasSeaFields**                |                                                                       |
| `field::HasFields::not_none_fields`                   | `field::HasSeaFields::not_none_sea_fields`                            |
| `field::HasFields::all_fields`                        | `field::HasSeaFields::all_sea_fields`                                 |
| `field::HasFields::field_idens`                       | `field::HasSeaFields::sea_idens`                                      |
| `field::HasFields::field_column_refs`                 | `field::HasSeaFields::sea_column_refs`                                |
| `field::HasFields::field_column_refs_with_rel`        | `field::HasSeaFields::sea_column_refs_with_rel`                       |
| **Attributes**                                        |                                                                       |
| `#[field(table="table_name",name="col_name")]`        | `#[field(rel="table_name",name="col_name")]`                          |
| **SQLite**                                            |                                                                       |
|                                                       | `ToSqliteValue`                                                       |