chore: release 3.3.0

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,26 @@
 
 [1]: https://pypi.org/project/google-cloud-spanner/#history
 
+## [3.3.0](https://www.github.com/googleapis/python-spanner/compare/v3.2.0...v3.3.0) (2021-03-24)
+
+
+### Features
+
+* add support for CMEK ([#105](https://www.github.com/googleapis/python-spanner/issues/105)) ([e990ff7](https://www.github.com/googleapis/python-spanner/commit/e990ff70342e7c2e27059e82c8d74cce39eb85d0))
+* add support for custom timeout and retry parameters in execute_update method in transactions ([#251](https://www.github.com/googleapis/python-spanner/issues/251)) ([8abaebd](https://www.github.com/googleapis/python-spanner/commit/8abaebd9edac198596e7bd51d068d50147d0391d))
+* **db_api:** support executing several DDLs separated by semicolon ([#277](https://www.github.com/googleapis/python-spanner/issues/277)) ([801ddc8](https://www.github.com/googleapis/python-spanner/commit/801ddc87434ff9e3c86b1281ebfeac26195c06e8))
+
+
+### Bug Fixes
+
+* avoid consuming pending null values when merging ([#286](https://www.github.com/googleapis/python-spanner/issues/286)) ([c6cba9f](https://www.github.com/googleapis/python-spanner/commit/c6cba9fbe4c717f1f8e2a97e3f76bfe6b956e55b))
+* **db_api:** allow file path for credentials ([#221](https://www.github.com/googleapis/python-spanner/issues/221)) ([1de0284](https://www.github.com/googleapis/python-spanner/commit/1de028430b779a50d38242fe70567e92b560df5a))
+
+
+### Documentation
+
+* fix docstring types and typos ([#259](https://www.github.com/googleapis/python-spanner/issues/259)) ([1b0ce1d](https://www.github.com/googleapis/python-spanner/commit/1b0ce1d2986085ce4033cf773eb6c5d3b904473c))
+
 ## [3.2.0](https://www.github.com/googleapis/python-spanner/compare/v3.1.0...v3.2.0) (2021-03-02)
 
 

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-spanner"
 description = "Cloud Spanner API client library"
-version = "3.2.0"
+version = "3.3.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'