fix packaging

Author: kapilt

pyproject.toml

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
 [tool.pytest.ini_options]
 markers = [
     "refactor: tests that need to be refactored to use celfilter_instance"
@@ -35,7 +36,7 @@ classifiers = [
   "Development Status :: 4 - Beta",
   "Programming Language :: Python"
 ]
-packages = [{ include = "src/celpy" }]
+packages = [{ include = "celpy", from = "src"}]
 
 [tool.poetry.dependencies]
 python = "^3.8"