fix encoded file add

Dependencies

• [2] Q3GU26WD merge with changes from sanakirja v1.1.2
• [3] ZRUPLBBT Colours in diff and change: separating concerns and dependencies
• [4] VO5OQW4W Removing anyhow in libpijul
• [5] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [6] VYHHOEYH Versions and formatting
• [7] YN63NUZO Sanakirja 1.0

Change contents

• replacement in libpijul/src/tests/mod.rs at line 92
  [2.613]→[2.613:691](∅→∅)
  − let Ok((hash, _)) = record_all_change(repo, store, txn, channel, prefix);
  [2.613]

  [3.291146]
  + let (hash, _) = record_all_change(repo, store, txn, channel, prefix).unwrap();
• edit in libpijul/src/record.rs at line 274
  [2.790]→[2.790:885](∅→∅)
  − let encoding = working_copy.decode_file(&item.full_path, &mut self.rec.contents)?;
• edit in libpijul/src/record.rs at line 275
  [3.49474]

  [2.886]
  + let encoding = working_copy.decode_file(&item.full_path, &mut self.rec.contents)?;
• replacement in libpijul/src/change/text_changes.rs at line 1205
  [3.3543]→[3.3543:3589](∅→∅)
  − write!(self, "{} {}", pref, contents)
  [3.3543]

  [3.3589]
  + writeln!(self, "{} {}", pref, contents)