Fix README not included in Python distribution #46

Job	Run time
Lint	1m 32s
Test Rust source (stable, ubuntu-latest)	15s
Test Python bindings (3.8, ubuntu-latest)	25s
Test Rust source (stable, windows-latest)	1m 32s
Test Python bindings (3.8, windows-latest)	2m 24s
Test Rust source (stable, macos-latest)	21s
Test Python bindings (3.8, macos-latest)	1m 4s
Test Rust source (nightly, ubuntu-latest)	22s
Test Python bindings (3.9, ubuntu-latest)	19s
Test Rust source (nightly, windows-latest)	2m 8s
Test Python bindings (3.9, windows-latest)	1m 35s
Test Rust source (nightly, macos-latest)	31s
Test Python bindings (3.9, macos-latest)	25s
Test Python bindings (3.10, ubuntu-latest)	25s
Test Python bindings (3.10, windows-latest)	1m 48s
Test Python bindings (3.10, macos-latest)	25s
Test Python bindings (3.11, ubuntu-latest)	24s
Test Python bindings (3.11, windows-latest)	1m 55s
Test Python bindings (3.11, macos-latest)	24s
Test Python bindings (3.12.3, ubuntu-latest)	43s
Test Python bindings (3.12.3, windows-latest)	2m 24s
Test Python bindings (3.12.3, macos-latest)	31s
Test Rust crate release	14s
Release Rust crate	0s
Build MacOS Python wheels	1m 55s
Build Windows Python wheels	1m 53s
Build Linux Python wheels	2m 27s
Release Python wheels	0s
	28m 21s

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