chore: update CHANGELOG.md for 20

Author: lidavidm

CHANGELOG.md

@@ -1030,3 +1030,137 @@
 - update jdbc.rst to fix dependency artifact ID mismatch (#2976)
 - **rust**: add ADBC_SNOWFLAKE_GO_LIB_DIR requirement (#2984)
 - **rust**: add protobuf requirement (#2964)
+
+## ADBC Libraries 20 (2025-09-09)
+
+### Versions
+
+- C/C++/GLib/Go/Python/Ruby: 1.8.0
+- C#: 0.20.0
+- Java: 0.20.0
+- R: 0.20.0
+- Rust: 0.20.0
+
+### Breaking Changes
+
+- ⚠️ **rust**: not to mark some enums as `non_exhaustive` (#3245)
+- ⚠️ **rust/core**: move the driver_manager feature to the new adbc_driver_manager package (#3197)
+- ⚠️ **rust/core**: move the ffi related stuff to the new adbc_ffi package (#3381)
+- ⚠️ **rust/driver/datafusion**: update to datafusion 48 (#3167)
+
+### New Features
+
+- **c/driver/postgresql**: bind arrow.json to JSON (#3333)
+- **c/driver/sqlite, python/adbc_driver_manager**: bind params by name (#3362)
+- **c/driver_manager**: don't ignore invalid manifests (#3399)
+- **c/driver_manager**: improve error reporting for manifests (#3386)
+- **c/driver_manager, rust/driver_manager**: add manifest version check (#3393)
+- **c/driver_manager, rust/driver_manager**: handle virtual environments in driver manager (#3320)
+- **csharp/src**: Add support for adding and configuring OTel exporters (#2949)
+- **csharp/src/Apache.Arrow.Adbc/Tracing**: allow ActivitySource tags to be set from TracingConnection (#3218)
+- **csharp/src/Drivers**: update drivers to .NET 8 (#3120)
+- **csharp/src/Drivers/Apache**: Add compression support for Spark, Impala & Hive Http Connection (#3127)
+- **csharp/src/Drivers/Apache**: Enabled Standard protocol for Spark and used SASL transport with basic auth (#3380)
+- **csharp/src/Drivers/Apache**: Implement protocol fallback mechanism to support old server version of Spark & Hive (#3312)
+- **csharp/src/Drivers/Apache**: Implement self signed ssl certificate validation for Spark, Impala & Hive (#3224)
+- **csharp/src/Drivers/Apache**: add env variable config override for databricks (#3304)
+- **csharp/src/Drivers/Apache**: add support for Statement.Cancel (#3302)
+- **csharp/src/Drivers/BigQuery**: Enhanced tracing and large resultset improvements (#3022)
+- **csharp/src/Drivers/Databricks**: Add W3C trace context (#3082)
+- **csharp/src/Drivers/Databricks**: Fix EnablePkFk (#3098)
+- **csharp/src/Drivers/Databricks**: Fix StatementTimeoutTest (#3133)
+- **csharp/src/Drivers/Databricks**: Move DescribeTableExtended to version negotiator (#3137)
+- **csharp/src/Drivers/Databricks**: Remove redundant CloseOperation for GetColumnsAsync (#3132)
+- **csharp/src/Drivers/Databricks**: Remove redundant closeoperation (#3093)
+- **csharp/src/Drivers/Databricks**: Use ArrowSchema for Response Schema (#3140)
+- **csharp/test/Drivers/Databricks**: Add mandatory token exchange (#3192)
+- **csharp/test/Drivers/Databricks**: Enable RunAsync option in TExecuteStatementReq (#3171)
+- **csharp/test/Drivers/Databricks**: Support token refresh to extend connection lifetime (#3177)
+- **glib**: add AdbcStatementGetParameterSchema() bindings (#3118)
+- **go/adbc**: add GetDriverInfo helper (#3239)
+- **go/adbc**: add IngestStream helper for one-call ingestion and add TestIngestStream (#3150)
+- **go/adbc/driver/bigquery**: Add "adbc.bigquery.sql.location" param (#3280)
+- **go/adbc/driver/bigquery**: error if we lack readSessionUser (#3297)
+- **go/adbc/driver/bigquery**: support service account impersonation (#3174)
+- **go/adbc/driver/snowflake**: Enable PAT and WIF auth (#3366)
+- **go/adbc/sqldriver**: handle timestamp/time.Time values for input (#3109)
+- **java/driver/jni**: enable new load flags (#3373)
+- **java/driver/jni**: implement parameter binding (#3370)
+- **java/driver/jni**: pass through all initial params (#3372)
+- **ruby**: don't use adbc-arrow-glib (#3221)
+- **rust/core**: add function to load driver manifests (#3099)
+- **rust/driver/snowflake**: add `pat` and `wif` auth types (#3376)
+
+### Bugfixes
+
+- **c/driver_manager**: add `drivers` subdir in search paths (#3375)
+- **c/driver_manager**: fix expected `;` for musl arch (#3105)
+- **c/driver_manager**: modify SYSTEM path behavior on macOS (#3250)
+- **c/driver_manager**: rename `ADBC_CONFIG_PATH` to `ADBC_DRIVER_PATH` (#3379)
+- **c/driver_manager**: use Driver.entrypoint as per docs (#3242)
+- **c/driver_manager, rust/driver_manager**: establish standard platform tuples (#3313)
+- **csharp/src/Apache.Arrow.Adbc/C**: Stop trying to unload dynamic libraries (#3291)
+- **csharp/src/Drivers**: Fix cloud fetch cancel/timeout mechnism (#3285)
+- **csharp/src/Drivers/Apache**: generate type-consistent empty result for GetColumnsExtended query (#3096)
+- **csharp/src/Drivers/Apache/Hive2**: Remove unnecessary CloseOperation in Statement.Dispose when query is metadata query (#3189)
+- **csharp/src/Drivers/Apache/Hive2**: add check to see if operation is already closed (#3301)
+- **csharp/src/Drivers/Apache/Spark**: fix column metadata index offset for Spark standard (#3392)
+- **csharp/src/Drivers/BigQuery**: Adjust default dataset id (#3187)
+- **csharp/src/Drivers/BigQuery**: Include try/catch for InvalidOperationException in ReadRowsStream (#3361)
+- **csharp/src/Drivers/BigQuery**: Modify ReadChunk behavior (#3323)
+- **csharp/src/Drivers/BigQuery**: add details for retried error message (#3244)
+- **csharp/src/Drivers/Databricks**: Add another fallback check of GetColumnsExtendedAsync (#3219)
+- **csharp/src/Drivers/Databricks**: Add instructions about driver config setup (#3367)
+- **csharp/src/Drivers/Databricks**: Change fallback check of Databricks.GetColumnsExtendedAsync (#3121)
+- **csharp/src/Drivers/Databricks**: Correct DatabricksCompositeReader and StatusPoller to Stop/Dispose Appropriately (#3217)
+- **csharp/src/Drivers/Databricks**: DatabricksCompositeReader unit tests (#3265)
+- **csharp/src/Drivers/Databricks**: Fix Databricks readme (#3365)
+- **csharp/src/Drivers/Databricks**: Fix null pointer exception (#3261)
+- **csharp/src/Drivers/Databricks**: PECO-2562 Use "default" schema in open session request (#3359)
+- **csharp/src/Drivers/Databricks**: Reader Refactors (#3254)
+- **csharp/src/Drivers/Databricks**: Set GetObjectsPatternsRequireLowerCase true (#3131)
+- **csharp/src/Drivers/Databricks**: Set enable_run_async_thrift default true (#3232)
+- **csharp/src/Drivers/Databricks**: Set the SqlState of the exception in RetryHttpHandler (#3092)
+- **csharp/src/Drivers/Databricks**: Use default result persistence mode (#3203)
+- **csharp/src/Drivers/Databricks**: [PECO-2396] Fix timestamp for dbr 6.6 - Set timestamp configuration on OpenSessionReq (#3327)
+- **csharp/src/Drivers/Databricks**: correct tracing instrumentation for assembly name and version (#3170)
+- **csharp/src/Drivers/Databricks**: fix CloudFetchResultFetcher initial results processing logic (#3097)
+- **csharp/test/Drivers**: Fix databricks tests (#3358)
+- **csharp/test/Drivers/Databricks**: Change the default QueryTimeoutSeconds to 3 hours (#3175)
+- **csharp/test/Drivers/Databricks**: Enrich RetryHttpHandler with other status codes (#3186)
+- **csharp/test/Drivers/Databricks**: Fix Pkfk Testcase (#3193)
+- **csharp/test/Drivers/Databricks**: Run token exchange in a background task (#3188)
+- **go/adbc**: Forward SQLSTATE and vendor code (#2801)
+- **go/adbc**: changing the location of FlightSQLDriverInit function (#3079)
+- **go/adbc/driver/bigquery**: accept old auth option value (#3317)
+- **go/adbc/driver/bigquery**: fix parsing repeated records with nested fields (#3240)
+- **go/adbc/driver/bigquery**: fix timestamp arrow type to use micro seconds (#3364)
+- **go/adbc/driver/snowflake**: fix unit tests (#3377)
+- **go/adbc/drivermgr**: properly vendor toml++ (#3138)
+- **go/adbc/pkg**: Run make regenerate to keep generated code in sync with templates (#3202)
+- **go/adbc/pkg**: add PowerShell option to run when executing in a Windows-based ADO pipeline (#3124)
+- **java/driver/jni**: update AdbcDriverFactory metadata (#3348)
+- **python/adbc_driver_bigquery**: correct string value of credential enum (#3091)
+- **python/adbc_driver_manager**: handle empty params in executemany (#3332)
+- **python/adbc_driver_manager**: mark calls with nogil (#3321)
+- **rust/core**: fix build errror on windows and enable ci for windows (#3148)
+- **rust/driver_manager**: modify SYSTEM path behavior on macOS (#3252)
+
+### Documentation Improvements
+
+- Fix pip install command for arrow-adbc-nightlies (#3222)
+- add Snowflake and BigQuery drivers to Python API reference (#3088)
+- add docs for driver manifests (#3176)
+- clarify relationship specification.rst to adbc.h (#3226)
+- consistent use of `pushd` instead of `cd` in the contributing guide (#3089)
+- fix invalid link in snowflake docs (#3246)
+- fix safari rendering in manifest_load.mmd diagram (#3391)
+- fix typo in python/adbc_driver_postgresql/README.md (#3194)
+- generate driver status from README badges (#2890)
+- improve go docs by adding a readme (#3204)
+- link to AdbcDriverInitFunc in how_manager.rst (#3227)
+- minor edits for first version of driver manager docs (#3180)
+- minor improvements to driver_manifests.rst (#3394)
+- organize Documentation steps of CONTRIBUTING.md (#3100)
+- rework driver manager references across docs (#3388)
+- **rust/core**: add simple usage of Driver Manager (#3086)