Tap-minio-csv

* Skip files when they are empty [17](https://github.com/singer-io/tap-s3-csv/pull/17)

* Attempt to setup a AWS session that can refresh itself [16](https://github.com/singer-io/tap-s3-csv/pull/16)

* Strips hyphens from incoming account_ids.

* Adds retry logic and exponential backoff for AWS requests that fail [10](https://github.com/singer-io/tap-s3-csv/pull/10)

* Updates how the tap authenticates with AWS - it will now assume a role given via the config [9](https://github.com/singer-io/tap-s3-csv/pull/9)

* Adds support for different types of CSV delimiters via singer-encodings [7](https://github.com/singer-io/tap-s3-csv/pull/7)