Update version numbers and changelog for v4.0.0

CHANGELOG.md

@@ -1,5 +1,22 @@
 # Changelog
 
+## [4.0.0] - 2024-05-02
+
+### Added
+
+- `Cargo.lock` is no longer ignored by Git.
+
+### Changed
+
+- `Error::ParsingIncomplete` now holds contextual data.
+- Updated to Rust's 2021 edition.
+- Updated esplugin to v5.0.1.
+
+### Removed
+
+- The `ffi-headers` build feature: if you want to generate C or C++ headers,
+  install and run cbindgen separately.
+
 ## [3.1.0] - 2023-09-05
 
 ### Added

Cargo.lock

@@ -308,7 +308,7 @@ checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
 [[package]]
 name = "loot-condition-interpreter"
-version = "3.1.0"
+version = "4.0.0"
 dependencies = [
  "crc32fast",
  "criterion",
@@ -322,7 +322,7 @@ dependencies = [
 
 [[package]]
 name = "loot-condition-interpreter-ffi"
-version = "3.1.0"
+version = "4.0.0"
 dependencies = [
  "libc",
  "loot-condition-interpreter",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "loot-condition-interpreter"
-version = "3.1.0"
+version = "4.0.0"
 authors = ["Oliver Hamlet <oliver@ortham.io>"]
 license = "MIT"
 edition = "2021"

ffi/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "loot-condition-interpreter-ffi"
-version = "3.1.0"
+version = "4.0.0"
 authors = ["Oliver Hamlet <oliver@ortham.io>"]
 license = "MIT"
 edition = "2021"