v0.6.3

Added

• Added a simple action in the Utilities app named "request user approval"
  which sends a message with some text to a user and has an accept/decline
  component.

Changed

• Refactoring of AppCache to use multiple objects. We had been storing it as
  a large dict which was becoming difficult to reason about. This is the
  first step of a larger planned refactoring of how apps are cached and
  validated

Fixed

• Bug on UI when arguments using an array type without item types specified
• Fixed issue with workflow migration caused to erroneously deleting a script