Include missing files in sdist

[thatch]

Include missing files in sdist for #1

Tested with

++ mktemp -d
+ D=/tmp/tmp.YPTa7zG0Gx
+ trap 'rm -rf /tmp/tmp.YPTa7zG0Gx' EXIT
+ python -m venv /tmp/tmp.YPTa7zG0Gx
+ python setup.py sdist -d /tmp/tmp.YPTa7zG0Gx
running sdist
running egg_info
writing loadtest.egg-info/PKG-INFO
writing dependency_links to loadtest.egg-info/dependency_links.txt
writing requirements to loadtest.egg-info/requires.txt
writing top-level names to loadtest.egg-info/top_level.txt
reading manifest file 'loadtest.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'loadtest.egg-info/SOURCES.txt'
running check
warning: Check: missing required meta-data: url

creating loadtest-0.0.1
creating loadtest-0.0.1/loadtest
creating loadtest-0.0.1/loadtest.egg-info
copying files to loadtest-0.0.1...
copying MANIFEST.in -> loadtest-0.0.1
copying README.md -> loadtest-0.0.1
copying requirements.txt -> loadtest-0.0.1
copying setup.py -> loadtest-0.0.1
copying loadtest/__init__.py -> loadtest-0.0.1/loadtest
copying loadtest.egg-info/PKG-INFO -> loadtest-0.0.1/loadtest.egg-info
copying loadtest.egg-info/SOURCES.txt -> loadtest-0.0.1/loadtest.egg-info
copying loadtest.egg-info/dependency_links.txt -> loadtest-0.0.1/loadtest.egg-info
copying loadtest.egg-info/requires.txt -> loadtest-0.0.1/loadtest.egg-info
copying loadtest.egg-info/top_level.txt -> loadtest-0.0.1/loadtest.egg-info
Writing loadtest-0.0.1/setup.cfg
Creating tar archive
removing 'loadtest-0.0.1' (and everything under it)
+ cd /
+ /tmp/tmp.YPTa7zG0Gx/bin/pip install /tmp/tmp.YPTa7zG0Gx/loadtest-0.0.1.tar.gz
Processing /tmp/tmp.YPTa7zG0Gx/loadtest-0.0.1.tar.gz
Collecting requests>=2.20.0 (from loadtest==0.0.1)
  Using cached https://files.pythonhosted.org/packages/1a/70/1935c770cb3be6e3a8b78ced23d7e0f3b187f5cbfab4749523ed65d7c9b1/requests-2.23.0-py2.py3-none-any.whl
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 (from requests>=2.20.0->loadtest==0.0.1)
  Using cached https://files.pythonhosted.org/packages/e1/e5/df302e8017440f111c11cc41a6b432838672f5a70aa29227bf58149dc72f/urllib3-1.25.9-py2.py3-none-any.whl
Collecting idna<3,>=2.5 (from requests>=2.20.0->loadtest==0.0.1)
  Using cached https://files.pythonhosted.org/packages/89/e3/afebe61c546d18fb1709a61bee788254b40e736cff7271c7de5de2dc4128/idna-2.9-py2.py3-none-any.whl
Collecting chardet<4,>=3.0.2 (from requests>=2.20.0->loadtest==0.0.1)
  Using cached https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl
Collecting certifi>=2017.4.17 (from requests>=2.20.0->loadtest==0.0.1)
  Using cached https://files.pythonhosted.org/packages/57/2b/26e37a4b034800c960a00c4e1b3d9ca5d7014e983e6e729e33ea2f36426c/certifi-2020.4.5.1-py2.py3-none-any.whl
Installing collected packages: urllib3, idna, chardet, certifi, requests, loadtest
  Running setup.py install for loadtest: started
    Running setup.py install for loadtest: finished with status 'done'
Successfully installed certifi-2020.4.5.1 chardet-3.0.4 idna-2.9 loadtest-0.0.1 requests-2.23.0 urllib3-1.25.9
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.
+ echo Success
Success
++ rm -rf /tmp/tmp.YPTa7zG0Gx