Bump project version to 1.4.1, remove Py 3.5, 3.6 support

Author: 8bitsam

.github/workflows/build.yaml

@@ -48,8 +48,8 @@ jobs:
         replacesArtifacts: true
         token: ${{ secrets.GITHUB_TOKEN }}
         artifacts: ${{ github.workspace }}/dist/*.whl
-        tag: 1.4.0
-        body: This is an alpha build of the pdffit2 library (1.4.0)
+        tag: 1.4.1
+        body: This is an alpha build of the pdffit2 library (1.4.1)
 
     # This step will upload tagged commits to pypi.
     # The pypi token must be added to GH secrets

conda-recipe/conda_build_config.yaml

@@ -3,8 +3,6 @@ python:
   - 3.9
   - 3.8
   - 3.7
-  - 3.6
-  - 3.5
   - 2.7
 
 gsl: