- use tokio instead of os threads

- buffer writes
- also write in parallel

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "tiffwrite"
-version = "2026.1.1"
+version = "2026.5.0"
 edition = "2024"
-rust-version = "1.85.1"
+rust-version = "1.88.0"
 authors = ["Wim Pomp <w.pomp@nki.nl>"]
 license = "MIT OR Apache-2.0"
 description = "Write BioFormats/ImageJ compatible tiffs with zstd compression in parallel."
-homepage = "https://github.com/wimpomp/tiffwrite"
-repository = "https://github.com/wimpomp/tiffwrite"
+homepage = "https://git.wimpomp.nl/wim/tiffwrite"
+repository = "https://git.wimpomp.nl/wim/tiffwrite"
 documentation = "https://docs.rs/tiffwrite"
 readme = "README.md"
 keywords = ["bioformats", "tiff", "ndarray", "zstd", "fiji"]
@@ -24,17 +24,15 @@ color-eyre = { version = "0.6", optional = true }
 chrono = "0.4"
 css-color = "0.2"
 flate2 = "1"
+lazy_static = "1"
 ndarray = "0.17"
 num = "0.4"
-numpy = { version = "0.27", optional = true }
+numpy = { version = "0.28", optional = true }
+pyo3 = { version = "0.28", features = ["abi3-py310", "eyre", "generate-import-lib", "multiple-pymethods"], optional = true }
 rayon = "1"
 thiserror = "2"
+tokio = { version = "1", features = ["fs", "rt", "rt-multi-thread", "time"] }
 zstd = "0.13"
 
-[dependencies.pyo3]
-version = "0.27"
-features = ["extension-module", "abi3-py310", "eyre", "generate-import-lib", "multiple-pymethods"]
-optional = true
-
 [features]
 python = ["dep:pyo3", "dep:numpy", "dep:color-eyre"]