HenryDayHall fixed a string inequality comparison (826) and added a dtype argument to ones/zeros/full_like functions (814).
agoose77 fixed an error in matrix multiplication when one array is NumPy (847).
henryiii cleaned up the setup.py (831), the setup.cfg (834), and CMakeLists (833).
trickarcher finished JAX integration, merging it into the main codebase (793 and 855).
ianna finished TypedArrayBulder implementation, leaving only the high-level interface (769), fixed an `argsort` bug with masked arrays (850), and arrays of complex types in `concatenate` (858).
jpivarski fixed unflattening `axis>0` with a scalar (820), ak.Record's "promote to subclass" (825), adding a handler for pyarrow's `DataType(null)` and `ndim != 1` boolean arrays in `to_arrow` (837), allowed scalars in `ak.zip` to make an ak.Record if they're _all_ scalars (839), and removed "ignore" from some Flake8 complaints (844).