Register INI dialects using decorator
Register properties dialects using decorator
Revert "Cleanup: Rename isblank to is_blank and convert to property"

This reverts commit 199cf7926fffd5dd7ee1838cb0de0f97bf9032dd.
Add @deprecated to easily mark deprecated functions and methods
Use @deprecated instead of custom code
Mark as deprecated the isblank() function

Will be replaced by the is_blank property in the future.