More accurate recording of modification time

Dependencies

• [2] G6S6PWZE Do not touch the channel if this is a partial record
• [3] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [4] KWAGWB73 Adding extra dependencies from the config file
• [5] CCLLB7OI Upgrading to Sanakirja 0.15 + version bump

Change contents

• edit in pijul/src/commands/record.rs at line 144
  [2.202]

  [2.202]
  + let now = std::time::SystemTime::now();
• edit in pijul/src/commands/record.rs at line 147
  [2.301]

  [2.301]
  + debug!("commit: {:?}", now.elapsed());
• replacement in pijul/src/commands/record.rs at line 265
  [3.108673]→[3.108673:108710](∅→∅)
  − return Ok(None);
  [3.108673]

  [3.108710]
  + bail!("Empty change")
• replacement in pijul/src/commands/record.rs at line 279
  [3.109215]→[3.109215:109248](∅→∅)
  − return Ok(None);
  [3.109215]

  [3.109248]
  + bail!("Empty change")