Merge branch 'release-2.7.0'

.gitlab-ci.yml

CHANGELOG.txt

CMakeLists.txt

actions/ost-compare-ligand-structures

actions/ost-compare-structures

build_configs/buildconfig_bc2

doc/make.py

docker/Dockerfile

doxygen/Doxyfile

modules/bindings/src/USalign/MMalign.cpp

modules/bindings/src/USalign/MMalign.h

modules/bindings/src/USalign/OST_INFO

modules/bindings/src/USalign/USalign.cpp

modules/bindings/src/USalign/readme.txt

modules/bindings/src/wrap_tmalign.cc

modules/conop/doc/compoundlib.rst

modules/conop/src/amino_acids.hh

modules/conop/src/chemdict_tool.cc

modules/conop/src/compound_lib.cc

modules/conop/src/processor.cc