Add python build variants to conda build config (#304)

* add python variants

* Update CHANGELOG.md

CHANGELOG.md

@@ -5,6 +5,8 @@
 - Add a new file widgets/box_widgets.py which contains classes cilviewerBoxWidget and cilviewerLineWidget for creating Box and Line widgets on the viewer.
 - Add example: BoxWidgetAroundSlice.py - which demonstrates using the above classes.
 - Use the cilviewerBoxWidget class for creating and positioning the ROIWidget on the CILViewer2D, which involved removing the `CILViewer2D._truncateBox` method.
+- Conda recipe:
+  - Add build variants for python. 
 
 ## v22.2.0
 - Qt examples use example_data 

Wrappers/Python/conda-recipe/conda_build_config.yaml

@@ -1,3 +1,16 @@
+python:
+  - 3.6
+  - 3.7
+  - 3.8
+  - 3.9
+  - 3.10 
 vtk:
   - 8.1.2
+  - 8.1.2
+  - 9.*
+  - 9.*
   - 9.*
+
+zip_keys:
+  - python
+  - vtk

Wrappers/Python/conda-recipe/meta.yaml

@@ -26,11 +26,11 @@ test:
 
 requirements:
   build:
-    - python
+    - python {{ python }}
     - vtk {{ vtk }}
 
   run:
-    - python
+    - python {{ python }}
     - numpy
     - vtk {{ vtk }}
     - pyside2