adding dacfx release notes

Author: Allan Cascante

release-notes/Microsoft.SqlServer.DacFx/170.5/170.5.60-preview.md

@@ -0,0 +1,32 @@
+# Release Notes
+
+## Microsoft.SqlServer.DacFx 170.5.60-preview
+
+This update brings the below changes over the previous release:
+
+### Adds
+* Adds pre-plan script support, including a dacpac artifact, public API, and MSBuild `<PrePlan>` plumbing
+* Adds editing of VECTOR column dimensions and base type in Table Designer
+* Adds support for VECTOR column dimensions and base types in table-valued parameters and function return types
+
+### Fixed
+* Fixes generation of an incorrect drop statement for unnamed default constraints [#807](https://github.com/microsoft/DacFx/issues/807)
+* Fixes non-deterministic object ordering when creating and updating a SQL project [#795](https://github.com/microsoft/DacFx/issues/795)
+* Fixes a redundant `ALTER TABLE ... ADD CONSTRAINT` emitted when publishing inline constraints from a project [#792](https://github.com/microsoft/DacFx/issues/792)
+* Fixes an `InvalidCastException` when extracting an object-level permission on a SECURITY POLICY [#800](https://github.com/microsoft/DacFx/issues/800)
+* Fixes DACPAC extract producing `ModelSchemaVersion` "2.4" instead of "2.6" for models without filegroups
+* Fixes a large BACPAC export failing with a "Stream was too long" overflow on `System.IO.Packaging`
+* Fixes a `SQL72008` build error when pre/post-deploy scripts reference `$(DacVersion)` / `$(DacVersion_Previous)`
+* Fixes BACPAC export of Always Encrypted large fixed-length columns
+* Fixes `VECTOR_SEARCH` table alias and distance column resolution in SQL project build
+* Fixes deployment of Hekaton native triggers to use `us_english` instead of `english`
+* Fixes reverse engineering of external languages failing on SQL Managed Instance due to an `is_system_language` bind failure
+* Fixes Schema Compare emitting redundant child-element scripts for inline-scriptable elements
+* Fixes `sp_addextendedproperty` with `@level1type=N'NULL'` for an extended property on a SECURITY POLICY
+* Fixes Table Designer identity default validation
+* Fixes stale Table Designer cache access token callbacks
+* Fixes the SqlDwUnified (Fabric Warehouse) platform incorrectly mapping to `Sql150`
+* Fixes error message location format to use `(line,col)` instead of `(line,col,line,col)`
+
+### Changed
+* Updates Microsoft.SqlServer.TransactSql.ScriptDom to 180.59.2