Sia dev update for the week of June 17th: 2 Nebulous repos were updated. 2 issues closed, 4 PRs merged. GitHub users Fornax96, eddiewang, MSevey and ChrisSchinnerl had code contributions. ChrisSchinnerl has been working on the new sia file format: (github.com/NebulousLabs/Sia/pull/3113). This change will enable file backups and file sharing later in the summer. MSevey added a warning for users for files that are unable to be repaired (github.com/NebulousLabs/Sia/pull/3083).