Add serialization methods for `List` and `StructDtype`#8441

Merged

rapids-bot[bot] merged 10 commits intorapidsai:branch-21.08from charlesbluca:add-dtype-serialization

Jun 21, 2021

+190-67

Commits on Jun 4, 2021

Add serialization methods for list and struct dtypes
charlesbluca
committed

Commits on Jun 14, 2021

Commits on Jun 16, 2021

Merge remote-tracking branch 'upstream/branch-21.08' into add-dtype-serialization
charlesbluca
committed

Commits on Jun 18, 2021

Relocate serialization functions to correpsonding column tests
charlesbluca
committed