hamiltonian_time_evolution_and_expectation_estimation.ipynb does not work

[MichaelBroughton]

On a fresh colab with an fqe install the notebook gives the following error:

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-3-0b93576fec06> in <module>()
      4 import numpy
      5 import fqe
----> 6 from fqe.unittest_data import build_lih_data, build_hamiltonian
      7 numpy.set_printoptions(floatmode='fixed', precision=6, linewidth=80, suppress=True)
      8 numpy.random.seed(seed=409)

ModuleNotFoundError: No module named 'fqe.unittest_data'

[ncrubin]

interesting. I had pip error before this.

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
datascience 0.10.6 requires folium==0.2.1, but you have folium 0.8.3 which is incompatible.
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv

but more importantly unittest module is no more. It is now a top-level directory. so grabbing data from there will require direct import. I can fix it.

[ncrubin]

See #116 for discussion and possible short term solution.