add Triple deftype with swizzling, optimize add-many/remove-many to reduce object creation, refactor remove-from-index, select fn, add model-size to PModel, rename :default model in dataset impl
add Triple deftype with swizzling, optimize add-many/remove-many to reduce object creation, refactor remove-from-index, select fn, add model-size to PModel, rename :default model in dataset impl

thi-ng/trio