add wse() alternative syntax, issue #463

[joente]

Description

Adds f(..)! syntax as alternative to wse(f(..))

Implements #463

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Test advance got extra checks

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes