Do a DFS on dependencies to complete the list

Dependencies

• [2] Q45QHPO4 Feedback on network stuff
• [3] BE7GUCI2 Completing dependencies only with changes the remote does not have
• [4] I52XSRUH Massive cleanup, and simplification
• [5] M5FK3ABT Complete dependencies when pushing and pulling
• [*] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).

Change contents

• replacement in pijul/src/commands/pushpull.rs at line 497
  [4.1054]→[4.1054:1141](∅→∅)
  − let mut now_ = HashSet::new();

  − let mut result = Vec::new();

  − for n in now {
  [4.1054]

  [4.1141]
  + let mut now_ = HashSet::with_capacity(original.len());

  + let mut result = Vec::with_capacity(original.len());

  + for &h in now {

  + now_.insert(h);

  + result.push(h);

  + }

  + let mut stack = now.to_vec();

  + stack.reverse();

  + while let Some(n) = stack.pop() {
• replacement in pijul/src/commands/pushpull.rs at line 507
  [4.1213]→[4.1213:1255](∅→∅)
  − for d in c.get_dependencies(n)? {
  [4.1213]

  [3.298]
  + for d in c.get_dependencies(&n)? {
• edit in pijul/src/commands/pushpull.rs at line 516
  [4.1390]

  [4.1390]
  + stack.push(d);
• replacement in pijul/src/commands/pushpull.rs at line 519
  [4.1414]→[2.2229:2286](∅→∅)
  − if now_.insert(*n) {

  − result.push(*n)
  [4.1414]

  [2.2286]
  + if now_.insert(n) {

  + result.push(n)