allow importing IncrementalMixin from airbyte_cdk.sources.streams (#11858)

* allow importing IncrementalMixin from airbyte_cdk.sources.streams

* format file

* update docs with hint on where to import IncrementalMixin from

* bump cdk version to 0.1.54

* update changelog

* only build python 3.9

* update changelog with python dep bump

airbyte-cdk/python/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.1.54
+- Add ability to import `IncrementalMixin` from `airbyte_cdk.sources.streams`.
+- Bumped minimum supported Python version to 3.9.
+
 ## 0.1.53
 Remove a false positive error logging during the send process.
 

airbyte-cdk/python/airbyte_cdk/sources/streams/__init__.py

@@ -3,6 +3,6 @@
 #
 
 # Initialize Streams Package
-from .core import Stream
+from .core import IncrementalMixin, Stream
 
-__all__ = ["Stream"]
+__all__ = ["IncrementalMixin", "Stream"]

airbyte-cdk/python/setup.py

@@ -15,7 +15,7 @@ README = (HERE / "README.md").read_text()
 
 setup(
     name="airbyte-cdk",
-    version="0.1.53",
+    version="0.1.54",
     description="A framework for writing Airbyte Connectors.",
     long_description=README,
     long_description_content_type="text/markdown",
@@ -33,8 +33,6 @@ setup(
         "Topic :: Software Development :: Libraries :: Python Modules",
         "License :: OSI Approved :: MIT License",
         # Python Version Support
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
     ],
     keywords="airbyte connector-development-kit cdk",