remove deprecated extension-module feature from docs and examples (#519)

Author: Icxolu

README.md

@@ -38,7 +38,7 @@ name = "rust_ext"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.27", features = ["extension-module"] }
+pyo3 = { version = "0.27" }
 numpy = "0.27"
 ```
 

examples/linalg/Cargo.toml

@@ -9,7 +9,7 @@ name = "rust_linalg"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.27.0", features = ["extension-module"] }
+pyo3 = { version = "0.27.0" }
 numpy = { path = "../.." }
 ndarray-linalg = { version = "0.14.1", features = ["openblas-system"] }
 

examples/linalg/pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
 build-backend = "maturin"
-requires = ["maturin>=1.0,<2.0"]
+requires = ["maturin>=1.9.4,<2.0"]

examples/parallel/Cargo.toml

@@ -9,7 +9,7 @@ name = "rust_parallel"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.27.0", features = ["extension-module", "multiple-pymethods"] }
+pyo3 = { version = "0.27.0", features = ["multiple-pymethods"] }
 numpy = { path = "../.." }
 ndarray = { version = "0.17", features = ["rayon", "blas"] }
 blas-src = { version = "0.8", features = ["openblas"] }

examples/parallel/pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
 build-backend = "maturin"
-requires = ["maturin>=1.0,<2.0"]
+requires = ["maturin>=1.9.4,<2.0"]

examples/simple/Cargo.toml

@@ -9,7 +9,7 @@ name = "rust_ext"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.27.0", features = ["extension-module", "abi3-py37"] }
+pyo3 = { version = "0.27.0", features = ["abi3-py37"] }
 numpy = { path = "../.." }
 
 [workspace]

examples/simple/pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
 build-backend = "maturin"
-requires = ["maturin>=1.0,<2.0"]
+requires = ["maturin>=1.9.4,<2.0"]