Fix README not included in Python distribution #44

Job	Run time
Test Python bindings (3.8, ubuntu-latest)	35s
Lint	1m 8s
Test Python bindings (3.8, windows-latest)	2m 13s
Test Rust source (stable, ubuntu-latest)	14s
Test Python bindings (3.8, macos-latest)	1m 2s
Test Rust source (stable, windows-latest)	1m 52s
Test Python bindings (3.9, ubuntu-latest)	31s
Test Rust source (stable, macos-latest)	21s
Test Python bindings (3.9, windows-latest)	1m 11s
Test Rust source (nightly, ubuntu-latest)	22s
Test Python bindings (3.9, macos-latest)	33s
Test Rust source (nightly, windows-latest)	1m 57s
Test Python bindings (3.10, ubuntu-latest)	21s
Test Rust source (nightly, macos-latest)	38s
Test Python bindings (3.10, windows-latest)	2m 25s
Test Python bindings (3.10, macos-latest)	35s
Test Python bindings (3.11, ubuntu-latest)	24s
Test Python bindings (3.11, windows-latest)	2m 50s
Test Python bindings (3.11, macos-latest)	24s
Test Python bindings (3.12.3, ubuntu-latest)	39s
Test Python bindings (3.12.3, windows-latest)	2m 20s
Test Python bindings (3.12.3, macos-latest)	51s
Test Rust crate release	9s
Release Rust crate	0s
Build MacOS Python wheels	55s
Build Linux Python wheels	2m 25s
Build Windows Python wheels	2m 56s
Release Python wheels	0s
	29m 51s

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