Remove dependency on itertools

Cargo.lock

@@ -274,15 +274,6 @@ dependencies = [
  "hashbrown",
 ]
 
-[[package]]
-name = "itertools"
-version = "0.10.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itoa"
 version = "0.4.8"
@@ -812,11 +803,11 @@ dependencies = [
  "bytemuck",
  "codespan-reporting",
  "dirs",
+ "either",
  "flate2",
  "fxhash",
  "iai",
  "image",
- "itertools",
  "kurbo",
  "memmap2",
  "miniz_oxide 0.4.4",

Cargo.toml

@@ -9,18 +9,14 @@ default = ["fs"]
 cli = ["fs", "pico-args", "codespan-reporting", "same-file"]
 fs = ["dirs", "memmap2", "same-file", "walkdir"]
 
-# Dependency updates:
-# - Bump ttf-parser when rustybuzz is updated
-# - Bump usvg and resvg in conjunction with svg2pdf
-
 [dependencies]
 # Workspace
 typst-macros = { path = "./macros" }
 
 # Utilities
 bytemuck = "1"
+either = "1"
 fxhash = "0.2"
-itertools = "0.10"
 once_cell = "1"
 serde = { version = "1", features = ["derive"] }
 typed-arena = "2"

src/library/par.rs

@@ -2,7 +2,7 @@
 
 use std::sync::Arc;
 
-use itertools::Either;
+use either::Either;
 use unicode_bidi::{BidiInfo, Level};
 use xi_unicode::LineBreakIterator;