* Added new cataloger interface
* Implementing catalog protocol
* Propagated to protocol and over
* First round of fixes
* S3 almost ready, need to be tested
* Going on with testing s3
* Better testing with s3
* Simplified catalog tests
* Preparing gcp tests to access a gcp instance
* Fixing initialization errors
* Removed some prints
* Gcp ready, to be tested
* Gcp working
* Aligned bucket mock to catalog method
* Switched res payload to json
* Added catalog method to all storage instances
* Added catalog method to unsupported storages
* Fixed with pool test
* Restored tests
* Fixed gcp constructor
* Implemented catalog for fs
* Removed trace
* E2e tests, fixed fs
* Fixed module name return value
* Added cataloger method to azure storage
* Added docs
* Changed pagesize parameter name
* Fixed gofmt error
* Added json tags to result. Fixed lint warning
* Removed extra line
* Changed not implemented error to http.KindNotImplemented
* Checking for inequality on results
* Lower-cased json keys
* Added cleaning of path separator
* Fixed review comments
* Fixed docs
* Athens: introduce pkg/errors
* errors: fix Ops loop
* pkg/errors: introduce M and V types to get rid of unstable parsing
* fix build
* errors: fix text + add tests
* pr updates
