Hello!

This week I added initial implementations for the following visitors:
logic_precedence and
final_attribute

And also opened a couple of pull requests in Dmd with some minor additions:
add visit interface and
visibility fix that's still in work.

Also I noticed some changed introduced in dmd so that the parser can't be used currently with
ASTBase, because of the addition of classes ErrorStatement and ErrorExp. This week I will
focus on adding these classes to ASTBase