Version 1.5.0 release

This release add support for Python postponed type annotations.

• Postponed type annotations are configured by specifying from __future__ import annotations at the top of module files.

• It causes all type annotations to be returned as plain strings, rather than processed Python class objects. This feature is being increasingly used with user code, and will eventually become the default behavior for Python.

• Using Python type annotations is now the preferred mechanism to specify Clorm Predicate sub-classes. For example:

   from clorm import Predicate, ConstantStr
  
   class MyPredicate(Predicate, name="my_predicate"):
       field1: int
       field2: str
       field3: ConstantStr
  
   p = MyPredicate(field1=10, field2="Hello", `field3="friend")
  
   # resulting ASP fact: `my_predicate(10, "Hello", friend).` 
  

• The documentation has been updated to reflect the new preferred syntax.