Pin the dependencies ...

... after upgrading:
- alembic
- matplotlib
- pandas
- rpy2
- sqlalchemy
- statsmodels
- dev dependencies
  + coverage     + factory-boy    + faker                 + nox
  + packaging    + pre-commit     + flake8-annotations    + pytest
  + pytest-cov   + sphinx
- research dependencies
  + numpy        + pyty
- transient dependencies
  + astpretty    + atomicwrites   + bleach                + chardet
  + colorlog     + darglint       + flake8-comprehensions + gitpython
  + identify     + ipykernel      + ipython               + jedi
  + jinja2       + jupyter-client + jupyter-core          + mako
  + nbformat     + nest-asyncio   + notebook              + parso
  + pluggy       + prompt-toolkit + ptyprocess            + pygments
  + pyyaml       + pyzmq          + requests              + smmap
  + terminado    + textfixtures   + snowballstemmer       + typed-ast
  + urllib3      + virtualenv

- fix SQL statements written in raw text