Support converting between `anyhow::Error` and `eyre::Report` automatically with `?` #507

Job	Run time
Test Suite	3m 53s
Test Suite (--no-default-features)	3m 40s
Test Suite (stable)	1s
Test Suite (--no-default-features --features track-caller)	3m 46s
Test Suite (--no-default-features --features auto-install)	3m 45s
Test Suite (stable, --no-default-features)	1s
Test Suite (stable, --no-default-features --features track-caller)	1s
Clippy (stable)	24s
Check (stable)	15s
Test Suite (stable, --no-default-features --features auto-install)	1s
Rustfmt (stable)	9s
Test Suite (stable, --features pyo3)	1s
Miri	55s
Test Suite (stable, --all-features)	1s
Test Suite (beta)	42s
Test Suite (ubuntu-latest)	1m 1s
Test Suite (beta, --no-default-features)	44s
Test Suite (windows-latest)	2m 33s
Test Suite (beta, --no-default-features --features track-caller)	43s
Test Suite (macOS-latest)	57s
Test Suite (beta, --no-default-features --features auto-install)	45s
Test Suite (beta, --features pyo3)	43s
Test Suite (beta, --all-features)	43s
Test Suite (nightly)	41s
Test Suite (nightly, --no-default-features)	1s
Test Suite (nightly, --no-default-features --features track-caller)	24s
Test Suite (nightly, --no-default-features --features auto-install)	21s
Test Suite (nightly, --features pyo3)	39s
Test Suite (nightly, --all-features)	45s
	28m 35s

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