fix: allow ccd residues with missing coords #733

Job	Run time
Generate wheels matrix	12s
Build CCD and wheel for reusing it in several CI jobs	4m 33s
Check code style	9s
Build source distribution	25s
Run benchmarks	4m 10s
Build documentation	4m 8s
Build & Test (cp310-manylinux_x86_64, ubuntu-latest)	4m 11s
Test interface to Muscle 5	1m 1s
Test interfaces to databases and applications	3m 36s
Build & Test (cp311-manylinux_x86_64, ubuntu-latest)	4m 8s
Upload CCD to GitHub Releases	3s
Build & Test (cp312-manylinux_x86_64, ubuntu-latest)	4m 8s
Build & Test (cp313-manylinux_x86_64, ubuntu-latest)	4m 8s
Build & Test (cp310-macosx_x86_64, macos-latest)	4m 11s
Build & Test (cp310-macosx_arm64, macos-latest)	2m 40s
Build & Test (cp311-macosx_x86_64, macos-latest)	4m 10s
Build & Test (cp311-macosx_arm64, macos-latest)	2m 36s
Build & Test (cp312-macosx_x86_64, macos-latest)	1m 29s
Build & Test (cp312-macosx_arm64, macos-latest)	2m 34s
Build & Test (cp313-macosx_x86_64, macos-latest)	1m 25s
Build & Test (cp313-macosx_arm64, macos-latest)	1m 27s
Build & Test (cp310-win_amd64, windows-latest)	3m 54s
Build & Test (cp311-win_amd64, windows-latest)	3m 53s
Build & Test (cp312-win_amd64, windows-latest)	3m 53s
Build & Test (cp313-win_amd64, windows-latest)	3m 56s
Upload documentation to GitHub Releases and documentation website	1s
Upload package to GitHub Releases & PyPI	1s
	1h 11m 2s

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