GitLab

Previously both application/json and multipart/formdata was sentduring upload. Now we let guzzle choose the correct ones.

When creating Images, the API sometimes returns 404 if calling get() to fast. Solved this by retrying the get() with exponential back off.

Described how to install, authenticate and other things.

Uploading, fetching, listing, updating and deletion.

Added proper return values when creating folders.
Changed visibility for some setters in FolderResponse from public to protected as these can't be modified via the API.