Pv/guard cleanup workdir (#87)

* update version to 0.4.0

Author: Phil Varner

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "stactask"
-version = "0.3.0"
+version = "0.4.0"
 authors = [{ name = "Matthew Hanson", email = "[email protected]" }]
 maintainers = [{ name = "Pete Gadomski", email = "[email protected]" }]
 description = "Class interface for running custom algorithms and workflows on STAC Items"