v1.0.0-beta05

• Breaking changed fetcher limit from Int to Long,
  added constraint annotation (from 0 to 100, default 25)
• added missing field variants to Submission preview
• added missing PollData to Submission
• added missing images and gifs Gallery to Submission
• added fetching of subreddits flairs, and tested flair filtering using search
• added missing type to Message model
• added Saveable interface
• exposed Docs and readme works
• minor fixes and tests