chore(main): release 0.0.4

:robot: I have created a release beep boop

actually use num replicas (4761a1f)
add ability to output dataclasses (4d9509c)
add ability to run more than one flow at a time (583d499)
add better autoscaling for streaming use cases (eb07a01)
add better error handling for streaming failutes (8e10580)
add metrics (506cd2c)
add pubsub resource setup (72d16a3)
add region to SQS source (c81f47a)
add resource setup for bigquery (6a770bd)
add some usability improvements (4d8fbbe)
add source for ingesting GCS file changes (6b1a979)
add support for SQS as a source (813740e)
add support to writing to local parquet files (d2b844b)
add usage stats to detect how often users are calling flow.run (1ce6279)
attempt to gracefully shutdown processors when interupt signal is found (652463d)
correctly parse list of dataclasses (ef1bd33)
correctly parse timestamp fields in dataclasses (a7d27a2)
drain on sigterm and improve pub/sub backlog (8ad5848)
error in pubsub walkthrough (669f417)
finish implementation of streaming autoscaler (3243412)
improvements to the autoscaller (3b8bb29)
refactor io into seperate sources and sinks (1dccb72)
request resource when we hit the max allowed by our current cluster (1377dfd)
return a single flow results object from flow.run() (e2b2cde)
set billing project when setting up GCP clients (a11c8f2)
support lists of dataclasses and some optimizations (36ef5eb)
update API to user a top level flow object (38bd595)
update description of package (36fb28c)

release 0.0.1 (571bd84)
release 0.0.1 (d184bb9)
release 0.0.3 (efd8b43)
release 0.0.4 (c7f7549)
release 2.0.0 (58d9129)

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