nanoarrow 0.4.0

Docs

• r: fix source links from pkgdown site (#315)

Feat

• Check flags field of ArrowSchema on ArrowSchemaViewInit (#368)
• Add decimal support to integration tester (#361)
• Add support for datetime types in integration tester (#356)
• Add dictionary support in integration test utility (#342)
• Add C Data integration test shared library (#337)
• Add Array/Schema/ArrayStream comparison utility to testing helpers (#330)
• Add batch reader and data file read/write to/from ArrowArrayStream (#328)
• Add integration testing reader for Column (#325)
• Add integration testing JSON reader (#322)
• Add Type/Field/Schema JSON writer for integration testing JSON (#321)
• extensions/nanoarrow_testing: Add nanoarrow_testing extension with testing JSON writer (#317)
• python: Implement user-facing Schema class (#366)
• python: basic export through PyCapsules (#320)
• python: Add ArrowDeviceArray extension to Python bindings (#313)
• python: Support the PyCapsule protocol (#318)
• r: Provide LinkingTo headers for extension packages (#332)
• r: Add more nanoarrow_array_stream generics (#349)
• r: Add conversion from integer type to character() (#345)

Fix

• Issue with appending NULLs to IntervalArray (#376)
• Suppress unused parameter warnings (#365)
• Add const qualifier where appropriate in struct fields and declarations (#327)
• docs: Correct typo in testing.rst (#348)
• r: Ensure simple list()s can be converted without arrow installed (#344)
• r: Ensure wrapper array stream eagerly releases the wrapped array stream (#333)

Perf

• Improved Bit (Un)packing Performance (#280)

Refactor

• Add wrappers around callbacks to improve syntax and debuggability (#338)
• Improve syntax for implementing ArrowArrayStream from C++ (#336)
• python: Document, prefix, and add reprs for C-wrapping classes (#340)