Merge branch 'develop' into 'master'

.coveragerc

.editorconfig

Pipfile

Pipfile.lock

README.md

doc/conf.py

doc/conversion.rst

doc/index.rst

doc/usage.rst

doc/visa_importer.md

src/openqlab/io/__init__.py

src/openqlab/io/base_importer.py

src/openqlab/io/importers/hp4395a_gpib.py

src/openqlab/io/importers/keysight_visa.py

...ts/test_io/test_importers/test_keysight_visa/mock_visa.py

...o/test_importers/test_keysight_visa/test_keysight_visa.py