Fix short description (#41)

pyproject.toml

@@ -13,7 +13,7 @@ build-backend = "setuptools.build_meta"
 [project]
 # https://packaging.python.org/en/latest/specifications/declaring-project-metadata/
 name = "qc-BFit"
-description = "Subset selection with maximum diversity."
+description = "Fitting a convex sum of Gaussian functions to any probability distribution."
 readme = {file = 'README.md', content-type='text/markdown'}
 requires-python = ">=3.9"
 # "LICENSE" is name of the license file, which must be in root of project folder