Support for maybe and map comprehensions

v1.3.0 (08.11.2023)

Enhancements

• Support map comprehensions, import_type attribute, and maybe constructs

POTENTIAL RE-FORMATTING

All "raw" maybe and else atoms will be automatically re-quoted to make
the code compatible with the maybe feature, if enabled.
After the transformation the code will be compatible with the maybe feature
both enabled & disabled.