Housekeeping: Class names improved
Fixed: Code style issue
Analyzer classes moved into separate namespace.
Visitor renamed
Last location refactoring in analyzers.
PSR2 violation fixed in test code
AST version number bumped
Invalid @covers annotation fixed.
Visitor structure unified.
Improved wording
Application renamed to Engine
Superfluous code removed.
Housekeeping method visitFile renamed to visitCompilationUnit
Housekeeping: Source file renamed to CompilationUnit
Housekeeping: Remove iterator dependency
Close #94 and disables the file cache on affected PHP version

with this fix we provide a workaround for issue 94 which is caused by a
bug in PHP's unserialize/serialize implementation in all PHP versions
5.4.0 and 5.4.4. With this workaround we deactivate the file cache in
all affected PHP versions.