Merge pull request #104 from pataroose/master

some changes to dup()
Merge pull request #105 from pataroose/master

Audio module DDoc
Fixed destructor not mixing in for release builds

One day I'll test everything.
Unit tests and small updates

Almost all graphic classes have unit tests now. Also fixed a couple of
things here and there.
Merge pull request #2 from Jebbs/master

Merge Jebbs updates