It looks to me that 0.10.1 has changed the behaviour of how files are copied.
In previous versions, I configured `source` to be something like `project/dest/**` and files that are inside and beneath `project/dest` directory are copied to the root directory of my bucket.
However, after upgrading to version 0.10.1, the plugin duplicated the directory structure in my S3 bucket as well. So my files are copied to `project/dest` directory in the bucket, which is not what I expected.
I'm not sure if this is a bug or should I file an improvement request that we can configure the plugin to keep our directory structure in S3 bucket or not?