add prompt for continuum data versioning; add dep if set

cookiecutter.json

@@ -6,6 +6,7 @@
     "package_name": "{{ cookiecutter.project_name.lower().replace(' ', '_').replace('-', '_') }}",
     "repo_name": "{{ cookiecutter.package_name }}",
     "project_short_description": "My web app",
+    "continuum_data_versioning": false,
     "open_source_license": ["MIT license", "BSD license", "ISC license", "Apache Software License 2.0", "GNU General Public License v3", "Not open source"],
     "__egg_name": "{{ cookiecutter.distribution_name.replace('-', '-') }}",
     "__studly_prefix": "{{ cookiecutter.project_name.replace(' ', '').replace('-', '') }}"

{{ cookiecutter.repo_name }}/pyproject.toml

@@ -22,7 +22,11 @@ classifiers = [
 license = {text = "{{cookiecutter.open_source_license}}"}
 dependencies = [
         "psycopg2",
+{% if cookiecutter.continuum_data_versioning %}
+        "WuttaWeb[continuum]",
+{% else %}
         "WuttaWeb",
+{% endif %}
 ]
 
 [project.scripts]