Remove superfluous phpdoc tags These just specify a type that is already specified as a real PHP type.
Fix coding style
Add PrettyPrinter interface Closes #423.
Revert "Rename PrettyPrinterAbstract to PrettyPrinter" This reverts commit 2217f14d6e039f1c0572329e6fcc99f6c17178a3.
Rename PrettyPrinterAbstract to PrettyPrinter