Apply Apache Version 2.0 License

core/tests/test_portable_binary.cc

core/tests/test_setcompoundschemlib.py

core/tests/tests.cc

doc/buildsystem.rst

doc/conf.py.in

doc/container/docker.rst

doc/container/index.rst

doc/container/singularity.rst

doc/contributing.rst

doc/dev_setup.rst

doc/developers.rst

doc/gettingstarted.rst

doc/index.rst

doc/licence.rst

doc/portableIO.rst

doc/references.rst

doc/tests/scripts/action_test.py

doc/tests/scripts/action_test_verbose.py

doc/tests/scripts/core_file_checks.py

doc/tests/scripts/core_msg_error.py