Bump to v1.2.0 (#130)

* bump to 1.2.0 and update changelog with possible breaking change note

Author: mattsb42-aws

CHANGELOG.rst

@@ -2,13 +2,16 @@
 Changelog
 *********
 
-1.1.2 -- 2019-10-??
+1.2.0 -- 2019-10-10
 ===================
 
 Bugfixes
 --------
 * Fix :class:`AwsKmsCryptographicMaterialsProvider` regional clients override bug
   `#124 <https://github.com/aws/aws-dynamodb-encryption-python/issues/124>`_
+  **NOTE: It is possible that this is a breaking change for you,
+  depending on how you are re-using any custom botocore sessions
+  that you provide to AwsKmsCryptographicMaterialsProvider.**
 * Remove ``attributes`` attribute from :class:`EncryptionContext` ``str`` and ``repr`` values.
   `#127 <https://github.com/aws/aws-dynamodb-encryption-python/issues/127>`_
 

src/dynamodb_encryption_sdk/identifiers.py

@@ -14,7 +14,7 @@
 from enum import Enum
 
 __all__ = ("LOGGER_NAME", "CryptoAction", "EncryptionKeyType", "KeyEncodingType")
-__version__ = "1.1.1"
+__version__ = "1.2.0"
 
 LOGGER_NAME = "dynamodb_encryption_sdk"
 USER_AGENT_SUFFIX = "DynamodbEncryptionSdkPython/{}".format(__version__)