Fastorm

- 🔨 Fixed equality checking on deduplication if only one of them was a `ForwardRef`.
- 🔨 Fixed upgrading of `Any` failing.

- 🔨 Fixed `SELECT` syntax for table references
- 🔨 Fixed `INSERT`, `UPDATE`, `SELECT`, `DELETE` for new field syntax (where a field referencing `OtherTable.id` would be called `other_table__id`).
- 🔨 Fixed `from_row(…)` if you used namespaces (those from `get_select_fields(namespace="…")`)
- ✅ Improved test coverage to pretty much everything.

- 🆕 Added caching for `get_fields_typehints(…)` and `get_fields_references(…)`.
- 🔨 Fixed error if you used a `ForwardRef` to reference a model not yet defined.
- ⚠️ Extracted the referencing part from the create stable stuff (`create_table(…)` and `build_sql_create(…)`). That way they can be executed independently (`create_table_references(…)` and `build_sql_references(…)`), so you can first create all the tables and then add the references.

- 🆕 added `get_connection_pool(…)` to get a connection pool ready to use.
- ⚠️ renamed `get_connection(…)` to `create_connection(…)`. To fit the naming of `get_connection_pool(…)`.
- 🔨 Fixed invalid `SELECT` query if there were no parameters given to `.select(…)` (or the underlying `.build_sql_select(…)`).
- Empty selectors will continue to be allowed for `.get(…)` as well, to keep that funny case possible, where there's only one row in a table and you wanna simply `SomeTable.get()` it.

- 🔨 Fix for CREATE table statement not allowing for a prepared statement, and thus needing the escaping of values.
- ℹ️ Needs psycopg2 installed for complex types (everything other than None, bool, int, and pure ascii strings)
- 🆕 Added support for `PRIMARY KEY`(`S`).
- 🆕 Added support for creating `REFERENCES` to other tables.

- 🆕 Handle `Optional[Table, <Table Primary Key Type>]` for references.
- Works for referencing other tables with a multi-field primary key, too.
- Added lots of unit tests and also fix bugs found by this
- 🆕 added support for multiple primary keys in most places now
- 🔨 fixes for errors/wonkyness introduced by using pydantic's BaseModel.