Renaming

* solvers -> solver
* adaptive_functions -> adaptive_function
* callbacks -> callback
* operators -> operator
* pinns -> physics_informed_solver
* layers -> block

pina/__init__.py

@@ -10,6 +10,7 @@ __all__ = [
 
 from .label_tensor import LabelTensor
 from .graph import Graph
-from .solvers.solver import SolverInterface, MultiSolverInterface
+from .solver import SolverInterface, MultiSolverInterface
 from .trainer import Trainer
 from .condition.condition import Condition
+from .data import PinaDataModule