Deterministic Git import

Dependencies

• [2] I52XSRUH Massive cleanup, and simplification
• [3] UCQD3JDH Fix build errors caused by sanakirja 0.14
• [4] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [5] L4JXJHWX pijul/*: reorganize imports and remove extern crate

Change contents

• replacement in pijul/src/commands/git.rs at line 2
  [3.137305]→[3.137305:137367](∅→∅)
  − use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
  [3.137305]

  [3.137367]
  + use std::collections::{BTreeMap, BTreeSet};
• replacement in pijul/src/commands/git.rs at line 109
  [2.3685]→[3.140323:140363](∅→∅),[3.140323]→[3.140323:140363](∅→∅)
  − let mut state = HashMap::new();
  [2.3685]

  [3.140363]
  + let mut state = BTreeMap::new();
• replacement in pijul/src/commands/git.rs at line 183
  [3.142637]→[3.142637:142671](∅→∅)
  − todo_set: HashSet<git2::Oid>,
  [3.142637]

  [3.142671]
  + todo_set: BTreeSet<git2::Oid>,
• replacement in pijul/src/commands/git.rs at line 185
  [3.142702]→[3.142702:142741](∅→∅)
  − next_todo_set: HashSet<git2::Oid>,
  [3.142702]

  [3.142741]
  + next_todo_set: BTreeSet<git2::Oid>,
• replacement in pijul/src/commands/git.rs at line 189
  [3.142912]→[3.142912:142949](∅→∅)
  − refs: HashMap<git2::Oid, usize>,
  [3.142912]

  [3.142949]
  + refs: BTreeMap<git2::Oid, usize>,
• replacement in pijul/src/commands/git.rs at line 196
  [3.143032]→[3.143032:143070](∅→∅)
  − todo_set: HashSet::new(),
  [3.143032]

  [3.143070]
  + todo_set: BTreeSet::new(),
• replacement in pijul/src/commands/git.rs at line 198
  [3.143105]→[3.143105:143182](∅→∅)
  − next_todo_set: HashSet::new(),

  − refs: HashMap::new(),
  [3.143105]

  [3.143182]
  + next_todo_set: BTreeSet::new(),

  + refs: BTreeMap::new(),