Lock (#89)

* FIX: repeated version of nbstripout

* ADD: PyPI shield

* ADD: .lock file

* FIX: removed appearance of Python 3.8

* FIX: removed appearance of Python 3.8

* ENH: PR CI Python version 3.8->3.11

.github/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/pr_ci.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2

README.md

@@ -6,11 +6,14 @@
 *Large-scale choice modeling through the lens of machine learning*
 
 [![CI status](https://github.com/artefactory/choice-learn/actions/workflows/ci.yaml/badge.svg)](https://github.com/artefactory/choice-learn/actions/workflows/ci.yaml?query=branch%3Amain)
-[![Python Version](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10-blue.svg)]()
 [![Linting , formatting, imports sorting: ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 [![security: bandit](https://img.shields.io/badge/security-bandit-yellow.svg)](https://github.com/PyCQA/bandit)
 [![Pre-commit](https://img.shields.io/badge/pre--commit-enabled-informational?logo=pre-commit&logoColor=white)](https://github.com/artefactory/choice-learn/blob/main/.pre-commit-config.yaml)
 
+
+[![Python Version](https://img.shields.io/badge/python-3.9%20%7C%203.10%20%7C%203.11-blue.svg)]()
+![PyPI - Version](https://img.shields.io/pypi/v/choice-learn)
+
 </div>
 
 
@@ -86,7 +89,7 @@ git clone [email protected]:artefactory/choice-learn.git
 
 ### Dependencies
 Choice-Learn requires the following:
-- Python (>=3.8)
+- Python (>=3.9)
 - NumPy (>=1.24)
 - pandas (>=1.5)