Bump version to 9.1.5

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).

Cargo.lock

@@ -394,7 +394,7 @@ checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
 [[package]]
 name = "oxipng"
-version = "9.1.4"
+version = "9.1.5"
 dependencies = [
  "bitvec",
  "clap",

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]

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')