Change log for unwitch project

Version 2.0.1

• Add haddock section headers separating boxed and unboxed conversions
• Each module with unboxed functions now has "Conversions" and "Unboxed conversions" sections with documentation explaining zero-allocation failure handling and required GHC extensions.

Version 2.0.0

• fix cabal file links
• delete complex module which made no sense.

Version 1.0.0

• claude generate most conversion functions, looks good

Version 0.1.0

Implement some of Double. Write description

Version 0.0.0

import template.