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Change log 5.5.0-preview (#895)

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CHANGELOG.md
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@ -3,6 +3,39 @@ All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](http://keepachangelog.com/)
## 5.5.0-preview - 2018-12-07
Updated PECL release packages. Here is the list of updates:
### Added
- Added support for PHP 7.3.0
- Added support for Linux Ubuntu 18.10 and mac OS Mojave
- Feature Request [#415](https://github.com/Microsoft/msphpsql/pull/886) - new options at connection and statement levels for both drivers for formatting decimal values in the fetched results
### Fixed
- Pull Request [#854](https://github.com/Microsoft/msphpsql/pull/854) - Clear Azure Key Vault data after connection attributes are successfully set or when exception is thrown
- Pull Request [#855](https://github.com/Microsoft/msphpsql/pull/855) - Improved performance by saving meta data before fetching and skipping unnecessary conversions for numeric data
- Pull Request [#865](https://github.com/Microsoft/msphpsql/pull/865) - Corrected the way SQLPutData and SQLParamData are used when sending stream data to the server
- Pull Request [#878](https://github.com/Microsoft/msphpsql/pull/878) - Modified the config files to enable Spectre Mitigations for PHP 7.1 (see related Request [#836](https://github.com/Microsoft/msphpsql/pull/836))
- Pull Request [#891](https://github.com/Microsoft/msphpsql/pull/891) - Improved performance of Unicode conversions
- Pull Request [#892](https://github.com/Microsoft/msphpsql/pull/892) - Removed warning messages while compiling extensions
### Limitations
- No support for inout / output params when using sql_variant type
- No support for inout / output params when formatting decimal values
- In Linux and macOS, setlocale() only takes effect if it is invoked before the first connection. Attempting to set the locale after connecting will not work
- Always Encrypted requires [MS ODBC Driver 17+](https://docs.microsoft.com/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server)
- Only Windows Certificate Store and Azure Key Vault are supported. Custom Keystores are not yet supported
- Issue [#716](https://github.com/Microsoft/msphpsql/issues/716) - With Always Encrypted enabled, named parameters in subqueries are not supported
- [Always Encrypted limitations](https://docs.microsoft.com/sql/connect/php/using-always-encrypted-php-drivers#limitations-of-the-php-drivers-when-using-always-encrypted)
### Known Issues
- Connection pooling on Linux or macOS is not recommended with [unixODBC](http://www.unixodbc.org/) < 2.3.7
- When pooling is enabled in Linux or macOS
- unixODBC <= 2.3.4 (Linux and macOS) might not return proper diagnostic information, such as error messages, warnings and informative messages
- due to this unixODBC bug, fetch large data (such as xml, binary) as streams as a workaround. See the examples [here](https://github.com/Microsoft/msphpsql/wiki/Features#pooling)
- With ColumnEncryption enabled, calling stored procedures with XML parameters does not work (Issue [#674](https://github.com/Microsoft/msphpsql/issues/674))
- With ColumnEncryption enabled, fetching varbinary(max), varchar(max) or nvarchar(max) may fail with [ODBC Driver 17.3 CTP](https://blogs.msdn.microsoft.com/sqlnativeclient/2018/09/24/odbc-driver-17-3-preview-for-sql-server-released/)
## 5.4.0-preview - 2018-09-24
Updated PECL release packages. Here is the list of updates: