refactor: ResumeToken contains a future which contains information about upload status.

Resume token contains a future which has information about upload status. If resume token is serialised the future is lost and before the upload continues one should refresh it by calling getUploadStatus method.
chore: remove unnecessary tests
refactor: ResumeToken does not have type any more. ResumeUpload flow refactored to utilise getUploadStatus method. getUploadStatus method has been made private.
refactor: uploadObject and resumeUpload method take a map of query parameters instead of optional predefined ones.
Changes after code review
Merge pull request #7 from markovuksanovic/0.2.0-marko

0.2.0 marko