Merge branch 'release-4.3.0'

CHANGELOG.txt

CMakeLists.txt

doc/source/conf.py

docker/Dockerfile

docker/README.md

docker/docker-entrypoint.sh

docker/getACCAligns.pl.patch

docker/homology_sa.pl.patch

docker/predict_ss_sa.pl.patch

docker/qmean_qmeandisco_example/README.md

docker/qmean_qmeandisco_example/model.pdb

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.../my_workdir/0e5b599c5303c996e3a760708e8cd90a/qmean_dc.dat

...orkdir/0e5b599c5303c996e3a760708e8cd90a/query_hhblits.a3m

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...orkdir/0e5b599c5303c996e3a760708e8cd90a/query_hhblits.hhm

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