Use setuptools-scm to ensure all repo files are in sdist

[wshanks]

Listing setuptools_scm in pyproject.toml enables it to be used to determine which files are included in the sdist instead of the older MANIFEST.in procedure. setuptools_scm just includes every file tracked by git which seems fine for this small project.

Additionally, delete INSTALL.txt which had outdated installation information.

[wshanks]

Closes #234

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.79%. Comparing base (3c3853d) to head (c0e80cf).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #235      +/-   ##
==========================================
+ Coverage   95.74%   95.79%   +0.05%     
==========================================
  Files          12       12              
  Lines        1903     1903              
==========================================
+ Hits         1822     1823       +1     
+ Misses         81       80       -1     

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[mgorny]

Thanks. I can confirm that with this change, python -m build -s includes all files in sdist.

[newville]

@wshanks Thanks -- we could also use this to set the version number from the git tag, as will

• pyproject.toml:
  add

[tool.setuptools_scm]
write_to = "uncertainties/version.py"
version_scheme = "post-release"

and remove

version = "3.2.0"

• uncertainties/__init__.py:

replace

# Numerical version:
__version_info__ = (3, 2, 0)
__version__ = '.'.join(map(str, __version_info__))

with

from .version import version as __version__

It would be OK with me to postpone this until later.

[wshanks]

I like the idea of using setuptools-scm to manage the version. I will look into doing that in a later PR.