Full Changelog: 0.2.0...0.2.1

I mostly rebased on @kalmard0 izlfs-s3 fork, which is more pleasant to work with.

Added permissions for automated releases

New release for package generation

Add error handling in the case that environment variables are not properly defined.

Add environment variable S3_USEPATHSTYLE.

Simplifying.

Progress tracking implemented. Concurrency bugs resolved. Documentation improvements.

Improve documentation and fix LFS pull.

Original release