This avoids problems with testing against the wrong package version
similarity index 100%
rename from qsim/__init__.py
rename to src/qsim/__init__.py
rename from qsim/gate.py
rename to src/qsim/gate.py
rename from qsim/measurement.py
rename to src/qsim/measurement.py
rename from qsim/state.py
rename to src/qsim/state.py