Merge pull request #18 from kagux/not_token

Logical NOT token and a shortcut for it
Add support for seting custom constructor arguments
Properly stringify hashes
Record calls that throw exception
Clarify ClassCreator exception message
Update changelog
Fixed double instantiation for constructor with arguments
Added Spec for double instanciation and constructor with arhuments
Added argument usage check in Doubler spec
Merge pull request #21 from yohang/master

Fix double instantiation for constructor with arguments
Added array entry token and shortcuts to match entry, key or value