From c3bf046b5dbdbebfbc8bd899a4a65637b03b18b4 Mon Sep 17 00:00:00 2001
From: Andrew <andrew@digerati.co.nz>
Date: Thu, 24 Apr 2025 20:37:38 +1200
Subject: [PATCH] Bump version to 9.1.5

---
 CHANGELOG.md |  7 +++++++
 Cargo.lock   |  2 +-
 Cargo.toml   |  2 +-
 MANUAL.txt   | 12 ++++++++++--
 4 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bf05b8a..11228d6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## Version 9.1.5
+
+- [Feature] Add `--sequential` option to process files sequentially rather than in parallel.
+- [Performance] Update to latest Zopfli with greatly improved performance.
+- [Improvement] Reduce memory usage.
+- [Bugfix] Correct handling of grayscale conversion when ICC profile is present.
+
 ## Version 9.1.4
 
 - [Improvement] Improve optimization of APNG files (reductions still not supported yet).
diff --git a/Cargo.lock b/Cargo.lock
index 9ad149bf..9b916cc4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -394,7 +394,7 @@ checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
 [[package]]
 name = "oxipng"
-version = "9.1.4"
+version = "9.1.5"
 dependencies = [
  "bitvec",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index c01e4966..7b808159 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ homepage = "https://github.com/shssoichiro/oxipng"
 license = "MIT"
 name = "oxipng"
 repository = "https://github.com/shssoichiro/oxipng"
-version = "9.1.4"
+version = "9.1.5"
 rust-version = "1.74.0"
 
 [badges]
diff --git a/MANUAL.txt b/MANUAL.txt
index 95b9abed..dd969663 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -1,4 +1,4 @@
-oxipng 9.1.4
+oxipng 9.1.5
 Losslessly improve compression of PNG files
 
 Usage: oxipng [OPTIONS] <files>...
@@ -182,7 +182,15 @@ Options:
           high compression levels.
 
   -t, --threads <num>
-          Set number of threads to use [default: num CPU cores]
+          Set the maximum number of threads to use. Oxipng uses multithreading to evaluate multiple
+          optimizations on the same file in parallel as well as process multiple files in parallel.
+          You can set this to a lower value if you need to limit memory or CPU usage.
+          
+          [default: num logical CPUs]
+
+      --sequential
+          Process multiple files sequentially rather than in parallel. Use this if you need
+          determinism in the processing order. Note this is not necessary if using '--threads 1'.
 
   -h, --help
           Print help (see a summary with '-h')