Disk Format
Bump to version 19 (.vac vacuum files now use relative filenames). [4024](https://github.com/TileDB-Inc/TileDB/pull/4024)
API changes
C API
* C API dimension handle. [3947](https://github.com/TileDB-Inc/TileDB/pull/3947)
* Query Plan API. [3921](https://github.com/TileDB-Inc/TileDB/pull/3921)
* Error out no-op set_config calls, FragmentInfo. [3885](https://github.com/TileDB-Inc/TileDB/pull/3885)
* Error out no-op set_config calls, Array. [3892](https://github.com/TileDB-Inc/TileDB/pull/3892)
* Error out no-op set_config calls, Group. [3878](https://github.com/TileDB-Inc/TileDB/pull/3878)
* Error out no-op set_config calls, Query. [3884](https://github.com/TileDB-Inc/TileDB/pull/3884)
C++ API
* Add a `Group` constructor that accepts a config in the C++ API. [4010](https://github.com/TileDB-Inc/TileDB/pull/4010)
* Add `get_option` method to the `Filter` class that returns the option value. [4139](https://github.com/TileDB-Inc/TileDB/pull/4139)
New features
* Support in place update of group members. [3928](https://github.com/TileDB-Inc/TileDB/pull/3928)
* Query Condition NOT support. [3844](https://github.com/TileDB-Inc/TileDB/pull/3844)
* Add new Delta Encoder to filters. [3969](https://github.com/TileDB-Inc/TileDB/pull/3969)
* Support new `STSProfileWithWebIdentityCredentialsProvider` S3 credential provider for use of WebIdentity S3 credentials. [4137](https://github.com/TileDB-Inc/TileDB/pull/4137)
* Enable query condition on dimensions for dense arrays. [3887](https://github.com/TileDB-Inc/TileDB/pull/3887)
Configuration changes
* Add `vfs.azure.max_retries`, `vfs.azure.retry_delay_ms` and `vfs.azure.max_retry_delay_ms` options to control the retry policy when connecting to Azure. [4058](https://github.com/TileDB-Inc/TileDB/pull/4058)
* Remove the `vfs.azure.use_https` option; connecting to Azure with HTTP will require specifying the scheme in `vfs.azure.blob_endpoint` instead. [4058](https://github.com/TileDB-Inc/TileDB/pull/4058)
* Removed `sm.mem.reader.sparse_global_order.ratio_query_condition` config option. [3948](https://github.com/TileDB-Inc/TileDB/pull/3948)
* "vfs.s3.no_sign_request" to allow unsigned s3 API calls, useful for anonymous s3 bucket access. [3953](https://github.com/TileDB-Inc/TileDB/pull/3953)
Improvement
* Filter pipeline: make chunk range path default and remove other. [3857](https://github.com/TileDB-Inc/TileDB/pull/3857)
* Prevent combining query conditions with dimension label queries. [3901](https://github.com/TileDB-Inc/TileDB/pull/3901)
* Add attribute data order to attribute capnp. [3915](https://github.com/TileDB-Inc/TileDB/pull/3915)
* Dense reader: adjust memory configuration parameters. [3918](https://github.com/TileDB-Inc/TileDB/pull/3918)
* Move array_open_for_writes from StorageManager to Array. [3898](https://github.com/TileDB-Inc/TileDB/pull/3898)
* Refactor the POSIX VFS and improve error messages. [3849](https://github.com/TileDB-Inc/TileDB/pull/3849)
* Update ArraySchema Cap'n Proto serialization to include dimension labels. [3924](https://github.com/TileDB-Inc/TileDB/pull/3924)
* Refactor readers to use `std::optional<QueryCondition>`. [3907](https://github.com/TileDB-Inc/TileDB/pull/3907)
* Move schema loading functions from StorageManager to ArrayDirectory. [3906](https://github.com/TileDB-Inc/TileDB/pull/3906)
* Migrate BufferList to Handle-based API. [3911](https://github.com/TileDB-Inc/TileDB/pull/3911)
* Avoid storing a separate vector of tiles when loading groups. [3975](https://github.com/TileDB-Inc/TileDB/pull/3975)
* Sparse unordered w/ dups: overflow fix shouldn't include empty tile. [3985](https://github.com/TileDB-Inc/TileDB/pull/3985)
* Sparse unordered w/ dups: smaller units of work. [3948](https://github.com/TileDB-Inc/TileDB/pull/3948)
* Dense reader: read next batch of tiles as other get processed. [3965](https://github.com/TileDB-Inc/TileDB/pull/3965)
* Sparse global order reader: defer tile deletion until end of merge. [4014](https://github.com/TileDB-Inc/TileDB/pull/4014)
* Silence warnings about unqualified calls to std::move on Apple Clang. [4023](https://github.com/TileDB-Inc/TileDB/pull/4023)
* Enable serialization for partial attribute writes. [4021](https://github.com/TileDB-Inc/TileDB/pull/4021)
* Fix vac files to include relative file names. [4024](https://github.com/TileDB-Inc/TileDB/pull/4024)
* Update Subarray Cap'n Proto serialization to include label ranges. [3961](https://github.com/TileDB-Inc/TileDB/pull/3961)
* Fix uses of `noexcept` in the C API code. [4040](https://github.com/TileDB-Inc/TileDB/pull/4040)
* Sparse readers: fixing null count on incomplete queries. [4037](https://github.com/TileDB-Inc/TileDB/pull/4037)
* Sparse readers: adding memory budget class. [4042](https://github.com/TileDB-Inc/TileDB/pull/4042)
* Use the new Azure SDK for C++. [3910](https://github.com/TileDB-Inc/TileDB/pull/3910)
* [superbuild] Set Curl CA path on Darwin. [4059](https://github.com/TileDB-Inc/TileDB/pull/4059)
* Enable support for estimating result size on nullable, remote arrays. [4079](https://github.com/TileDB-Inc/TileDB/pull/4079)
* Fix intermittent failure in Group Metadata, delete. [4097](https://github.com/TileDB-Inc/TileDB/pull/4097)
* Add Subarray::add_range to core stats. [4045](https://github.com/TileDB-Inc/TileDB/pull/4045)
* Query.cc: Fix function ordering. [4129](https://github.com/TileDB-Inc/TileDB/pull/4129)
* Improvements to the Azure VFS. [4058](https://github.com/TileDB-Inc/TileDB/pull/4058)
* Array directory: parallelize large URI vector processing. [4133](https://github.com/TileDB-Inc/TileDB/pull/4133)
* Remove all TileDB artifacts when performing Array and Group deletes. [4081](https://github.com/TileDB-Inc/TileDB/pull/4081)
Defects removed
* Sparse global order reader: tile size error includes hilbert buffer. [3956](https://github.com/TileDB-Inc/TileDB/pull/3956)
* Sparse unordered w/ dups: fix error on double var size overflow. [3963](https://github.com/TileDB-Inc/TileDB/pull/3963)
* Dense reader: fix copies for schema evolution. [3970](https://github.com/TileDB-Inc/TileDB/pull/3970)
* Sparse global order reader: fix read progress update for duplicates. [3937](https://github.com/TileDB-Inc/TileDB/pull/3937)
* Fix check during remote unordered write finalization. [3903](https://github.com/TileDB-Inc/TileDB/pull/3903)
* Avoid narrowing conversion warning by downcasting computed values. [3931](https://github.com/TileDB-Inc/TileDB/pull/3931)
* Fix support for empty strings for Dictionary and RLE encodings. [3938](https://github.com/TileDB-Inc/TileDB/pull/3938)
* Check for failed allocation in `TileBase` constructor and throw if so. [3955](https://github.com/TileDB-Inc/TileDB/pull/3955)
* Fix logger initialization [3962](https://github.com/TileDB-Inc/TileDB/pull/3962)
* Sparse global order reader: deletes and overflow can give wrong results. [3983](https://github.com/TileDB-Inc/TileDB/pull/3983)
* Fix buffer size check in sparse unordered with duplicates reader during partial reads. [4027](https://github.com/TileDB-Inc/TileDB/pull/4027)
* Initialize MemFS in the VFS. [3438](https://github.com/TileDB-Inc/TileDB/pull/3438)
* Fix array/group metadata deletion when they are inserted in the same operation. [4022](https://github.com/TileDB-Inc/TileDB/pull/4022)
* Fix Query Conditions for Boolean Attributes. [4046](https://github.com/TileDB-Inc/TileDB/pull/4046)
* Allow empty AWS credentials for reading public S3 data. [4064](https://github.com/TileDB-Inc/TileDB/pull/4064)
* Serialize coalesce ranges for Subarray. [4043](https://github.com/TileDB-Inc/TileDB/pull/4043)
* Use `std::map::insert_or_assign` to replace values in maps. [4054](https://github.com/TileDB-Inc/TileDB/pull/4054)
* Adds serialization for webp filter options. [4085](https://github.com/TileDB-Inc/TileDB/pull/4085)
* Subarray serialize coalesce ranges as true by default. [4090](https://github.com/TileDB-Inc/TileDB/pull/4090)
* Don't throw an exception from the Group destructor. [4103](https://github.com/TileDB-Inc/TileDB/pull/4103)
* Fix type `and` to be `&&` in experimental group C++ API. [4106](https://github.com/TileDB-Inc/TileDB/pull/4106)
* Fix dense reader error when query conditions reference var sized fields. [4108](https://github.com/TileDB-Inc/TileDB/pull/4108)
* Remove `TILEDB_EXPORT` from private C API functions. [4120](https://github.com/TileDB-Inc/TileDB/pull/4120)
* Filter out empty s3 subfolders [4102](https://github.com/TileDB-Inc/TileDB/pull/4102)
* Fix REST Client buffer management [4135](https://github.com/TileDB-Inc/TileDB/pull/4135)
* Adds checks to ensure subarray is within domain bounds during initialization of DenseReader. [4088](https://github.com/TileDB-Inc/TileDB/pull/4088)
* Fix C++ `Filter::set_option` and `Filter::get_option` methods to accept `tiledb_datatype_t` as a valid option type. [4139](https://github.com/TileDB-Inc/TileDB/pull/4139)
Build system changes
* Add support for building dependencies with vcpkg ([3920](https://github.com/TileDB-Inc/TileDB/pull/3920), [#3986](https://github.com/TileDB-Inc/TileDB/pull/3986), [#3960](https://github.com/TileDB-Inc/TileDB/pull/3960), [#3950](https://github.com/TileDB-Inc/TileDB/pull/3950), [#4015](https://github.com/TileDB-Inc/TileDB/pull/4015), [#4128](https://github.com/TileDB-Inc/TileDB/pull/4128), [#4093](https://github.com/TileDB-Inc/TileDB/pull/4093), [#4055](https://github.com/TileDB-Inc/TileDB/pull/4055))
* Quiet catch2 super build by only printing on failure. [3926](https://github.com/TileDB-Inc/TileDB/pull/3926)
* Add .rc file containing version info to windows build. [3897](https://github.com/TileDB-Inc/TileDB/pull/3897)
* Use sccache in CI. [4016](https://github.com/TileDB-Inc/TileDB/pull/4016)
* Fix building aws-sdk-cpp on Ubuntu 22.04. [4092](https://github.com/TileDB-Inc/TileDB/pull/4092)
Test changes
* Use storage-testbench as the GCS emulator. [4132](https://github.com/TileDB-Inc/TileDB/pull/4132)
* Add unit tests for tiledb/common/platform.h [3936](https://github.com/TileDB-Inc/TileDB/pull/3936)
* Adjust a config buffer parameter for two tests for success in both 32bit and 64bit environments [3954](https://github.com/TileDB-Inc/TileDB/pull/3954)
* Add TEST_CASE blocks that check for possible regression in sparse global order reader [3933](https://github.com/TileDB-Inc/TileDB/pull/3933)
* Use temporary directories from the OS in tests. [3935](https://github.com/TileDB-Inc/TileDB/pull/3935)
* Adds workflow to trigger REST CI. [4123](https://github.com/TileDB-Inc/TileDB/pull/4123)
C++ library changes
* Introduce `synchronized_optional`, a multiprocessing-compatible version of `std::optional` [3457](https://github.com/TileDB-Inc/TileDB/pull/3457)
* Task graph filtering experimental example [3894](https://github.com/TileDB-Inc/TileDB/pull/3894)