add 'Default' implementations

Dependencies

• [2] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [3] WZVCLZKY address clippy lints
• [4] O4DNWMPD Cleaunp and proofreading of libpijul::record
• [5] 43AJ37IX Getting rid of edge validation, which does not work for zombie conflicts
• [6] I52XSRUH Massive cleanup, and simplification
• [7] H23LO7U7 a few more clippy lints addressed

Change contents

• replacement in libpijul/src/working_copy/memory.rs at line 13
  [2.199487]→[2.199487:199504](∅→∅)
  − #[derive(Debug)]
  [2.199487]

  [2.199504]
  + #[derive(Debug, Default)]
• replacement in libpijul/src/working_copy/memory.rs at line 31
  [2.199823]→[2.199823:199968](∅→∅)
  − impl Memory {

  − pub fn new() -> Self {

  − Memory {

  − files: FileTree {

  − children: HashMap::new(),

  − },
  [2.199823]

  [2.199968]
  + impl Default for Memory {

  + fn default() -> Self {

  + Self {

  + files: FileTree::default(),
• edit in libpijul/src/working_copy/memory.rs at line 38
  [2.200030]

  [2.200030]
  + }
• edit in libpijul/src/working_copy/memory.rs at line 40
  [2.200031]

  [2.200031]
  + impl Memory {

  + pub fn new() -> Self {

  + Self::default()

  + }
• replacement in libpijul/src/small_string.rs at line 115
  [2.483280]→[2.483280:483348](∅→∅)
  − impl SmallString {

  − pub fn new() -> Self {

  − SmallString {
  [2.483280]

  [2.483348]
  + impl Default for SmallString {

  + fn default() -> Self {

  + Self {
• edit in libpijul/src/small_string.rs at line 121
  [2.483412]

  [2.483412]
  + }

  + }

  +

  + impl SmallString {

  + pub fn new() -> Self {

  + Self::default()
• edit in libpijul/src/record.rs at line 32
  [2.489820]

  [2.489820]
  + #[derive(Default)]
• replacement in libpijul/src/record.rs at line 47
  [2.490408]→[2.490408:490736](∅→∅)
  − impl Builder {

  − /// Initialise a `Builder`.

  − pub fn new() -> Self {

  − Builder {

  − rec: Recorded {

  − contents: Vec::new(),

  − actions: Vec::new(),

  − updatables: HashMap::new(),

  − has_binary_files: false,

  − largest_file: 0,

  − },
  [2.490408]

  [2.490736]
  + impl Default for Builder {

  + fn default() -> Self {

  + Self {

  + rec: Recorded::default(),
• edit in libpijul/src/record.rs at line 58
  [2.490950]

  [2.490950]
  + }
• edit in libpijul/src/record.rs at line 60
  [2.490951]

  [2.490951]
  + impl Builder {

  + /// Initialise a `Builder`.

  + pub fn new() -> Self {

  + Self::default()

  + }

  +
• edit in libpijul/src/missing_context.rs at line 311
  [2.706721]

  [2.706721]
  + #[derive(Default)]
• edit in libpijul/src/missing_context.rs at line 328
  [2.707200]→[2.707200:707487](∅→∅)
  − pub fn new() -> Self {

  − Workspace {

  − unknown: Vec::new(),

  − unknown_parents: Vec::new(),

  − pseudo: Vec::new(),

  − parents: HashSet::new(),

  − graphs: HashMap::new(),

  − covered_parents: HashSet::new(),

  − }

  − }
• replacement in libpijul/src/changestore/memory.rs at line 9
  [2.820926]→[2.820926:820943](∅→∅)
  − #[derive(Clone)]
  [2.820926]

  [2.820943]
  + #[derive(Clone, Default)]
• replacement in libpijul/src/changestore/memory.rs at line 17
  [2.821115]→[2.821115:821202](∅→∅)
  − Memory {

  − changes: Arc::new(RwLock::new(HashMap::new())),

  − }
  [2.821115]

  [2.821202]
  + Self::default()
• edit in libpijul/src/apply.rs at line 497
  [2.961172]

  [2.961172]
  + #[derive(Default)]
• replacement in libpijul/src/apply.rs at line 511
  [2.961638]→[2.961638:961996](∅→∅)
  − Workspace {

  − children: HashSet::new(),

  − parents: HashSet::new(),

  − pseudo: Vec::new(),

  − deleted_by: HashSet::new(),

  − up_context: Vec::new(),

  − down_context: Vec::new(),

  − missing_context: crate::missing_context::Workspace::new(),

  − rooted: HashMap::new(),

  − }
  [2.961638]

  [2.961996]
  + Self::default()