Include missing files in sdist

[thatch]

Include missing files in sdist for #1

Tested with

++ mktemp -d
+ D=/tmp/tmp.sJzkZ6jFeG
+ trap 'rm -rf /tmp/tmp.sJzkZ6jFeG' EXIT
+ python -m venv /tmp/tmp.sJzkZ6jFeG
+ python setup.py sdist -d /tmp/tmp.sJzkZ6jFeG
running sdist
running egg_info
writing qfast_sc.egg-info/PKG-INFO
writing dependency_links to qfast_sc.egg-info/dependency_links.txt
writing requirements to qfast_sc.egg-info/requires.txt
writing top-level names to qfast_sc.egg-info/top_level.txt
package init file 'qfast/native/__init__.py' not found (or not a regular file)
reading manifest file 'qfast_sc.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'qfast_sc.egg-info/SOURCES.txt'
running check
creating qfast-sc-1.0.1
creating qfast-sc-1.0.1/qfast
creating qfast-sc-1.0.1/qfast/native
creating qfast-sc-1.0.1/qfast_sc.egg-info
copying files to qfast-sc-1.0.1...
copying LICENSE.txt -> qfast-sc-1.0.1
copying MANIFEST.in -> qfast-sc-1.0.1
copying README.md -> qfast-sc-1.0.1
copying requirements.txt -> qfast-sc-1.0.1
copying setup.py -> qfast-sc-1.0.1
copying qfast/native/sc.py -> qfast-sc-1.0.1/qfast/native
copying qfast_sc.egg-info/PKG-INFO -> qfast-sc-1.0.1/qfast_sc.egg-info
copying qfast_sc.egg-info/SOURCES.txt -> qfast-sc-1.0.1/qfast_sc.egg-info
copying qfast_sc.egg-info/dependency_links.txt -> qfast-sc-1.0.1/qfast_sc.egg-info
copying qfast_sc.egg-info/not-zip-safe -> qfast-sc-1.0.1/qfast_sc.egg-info
copying qfast_sc.egg-info/requires.txt -> qfast-sc-1.0.1/qfast_sc.egg-info
copying qfast_sc.egg-info/top_level.txt -> qfast-sc-1.0.1/qfast_sc.egg-info
Writing qfast-sc-1.0.1/setup.cfg
Creating tar archive
removing 'qfast-sc-1.0.1' (and everything under it)
+ cd /
+ /tmp/tmp.sJzkZ6jFeG/bin/pip install /tmp/tmp.sJzkZ6jFeG/qfast-sc-1.0.1.tar.gz
Processing /tmp/tmp.sJzkZ6jFeG/qfast-sc-1.0.1.tar.gz
Collecting qfast>=1.0.0 (from qfast-sc==1.0.1)
  Downloading https://files.pythonhosted.org/packages/b5/df/bde67187d1d387b4cd18ecf954e717b8f530b30eb1fc294a3c493b5638c7/qfast-1.0.1-py3-none-any.whl
Collecting search_compiler>=1.2.0 (from qfast-sc==1.0.1)
  Downloading https://files.pythonhosted.org/packages/c6/88/2a5bd647e163a1893844b8257764aa5103f97a9d85c75e5ff27cebea0613/search_compiler-1.2.1-py2.py3-none-any.whl
Collecting qiskit==0.16.1 (from qfast>=1.0.0->qfast-sc==1.0.1)
  Downloading https://files.pythonhosted.org/packages/c5/28/4145dc6eb43ff5bd64099218a853afa53c528ef3a4abe2f7caf37a405469/qiskit-0.16.1.tar.gz
Collecting numpy==1.16.6 (from qfast>=1.0.0->qfast-sc==1.0.1)
  Downloading https://files.pythonhosted.org/packages/b7/6f/24647f014eef9b67a24adfcbcd4f4928349b4a0f8393b3d7fe648d4d2de3/numpy-1.16.6.zip (5.1MB)
Collecting scipy==1.4.1 (from qfast>=1.0.0->qfast-sc==1.0.1)
  Using cached https://files.pythonhosted.org/packages/f3/08/8bdcdcd149ea41b655956feb7c19ebf7e1f561738bd5570b6ae015daf411/scipy-1.4.1-cp38-cp38-manylinux1_x86_64.whl
Collecting tensorflow==1.13.1 (from qfast>=1.0.0->qfast-sc==1.0.1)
  ERROR: Could not find a version that satisfies the requirement tensorflow==1.13.1 (from qfast>=1.0.0->qfast-sc==1.0.1) (from versions: 2.2.0rc1, 2.2.0rc2, 2.2.0rc3, 2.2.0rc4, 2.2.0)
ERROR: No matching distribution found for tensorflow==1.13.1 (from qfast>=1.0.0->qfast-sc==1.0.1)
WARNING: You are using pip version 19.2.3, however version 20.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
++ rm -rf /tmp/tmp.sJzkZ6jFeG