Update package init to v0.2.0 with model exports

src/domain_tokenizer/__init__.py

@@ -5,6 +5,7 @@ Core components:
   - schema: DomainSchema, FieldSpec, FieldType
   - tokenizers: DomainTokenizerBuilder, per-field tokenizers
   - schemas: Predefined schemas (FINANCE, ECOMMERCE, HEALTHCARE)
+  - models: DomainTransformerForCausalLM, PLR, JointFusion
 """
 
 from .schema import DomainSchema, FieldSpec, FieldType
@@ -17,18 +18,9 @@ from .tokenizers.field_tokenizers import (
     MagnitudeBucketTokenizer,
     SignTokenizer,
 )
+from .models.configuration import DomainTransformerConfig
+from .models.modeling import DomainTransformerForCausalLM, DomainTransformerModel
+from .models.plr_embeddings import PeriodicLinearReLU
+from .models.joint_fusion import JointFusionModel, DCNv2
 
-__version__ = "0.1.0"
-
-__all__ = [
-    "DomainSchema",
-    "FieldSpec",
-    "FieldType",
-    "DomainTokenizerBuilder",
-    "BaseFieldTokenizer",
-    "SignTokenizer",
-    "MagnitudeBucketTokenizer",
-    "DiscreteNumericalTokenizer",
-    "CalendarTokenizer",
-    "CategoricalTokenizer",
-]
+__version__ = "0.2.0"