more fixes, bump to b5

Author: matthewhanson

setup.py

@@ -12,7 +12,7 @@
 
 setup(
     name="stactask",
-    version="0.1.0b4",
+    version="0.1.0b5",
     description=(
         "STAC Task class provides a class interface for running custom algorithms on STAC Items"
     ),

stactask/task.py

@@ -147,6 +147,8 @@ def add_software_version(cls, items: List[Dict]):
                 i["stac_extensions"] = []
             i["stac_extensions"].append(processing_ext)
             i["stac_extensions"] = list(set(i["stac_extensions"]))
+            if "properties" not in i:
+                i["properties"] = {}
             i["properties"]["processing:software"] = {cls.name: cls.version}
         return items