Turn into sub-issues as needed. - [x] Python support - [x] Extensions - [x] Unit test (constructors, serialization) - [x] Doc example - [x] Rust support - [x] Extensions - [x] Unit test (constructors, rust-to-rust roundtrip) - [x] Doc example - [ ] C++ support - [x] Extensions - [x] Unit test (constructors, serialization) - [ ] Doc example - [x] Cross-language roundtrip test - [x] #2790
Turn into sub-issues as needed.
Points{2|3}D#2790