0.0.27

Various fixes & improvements

• fix(gcssink): add working example + logging file name (#198) by @victoria-yining-huang
• ref(metrics): Add metrics for tracking pipeline status (#184) by @evanh
• feat(watermarks): add watermark support to the ArroyoStrategyDelegate (#190) by @bmckerry
• feat: add integration test for WatermarkEmitter (#195) by @bmckerry
• ref(comments): format comments (#197) by @victoria-yining-huang
• ref(typechecking): remove msg_type from instantiation arg (#196) by @victoria-yining-huang