bug(require/browser): debug package was required outside of class
bug(require/browser): debug package was required outside of class

The debug package was required outside of DebugLogger which broke the
browser support. It has to be required inside the class to only be
loaded when the logger is used (in node).

gintsgints/typeorm,typeorm/typeorm,typeorm/typeorm,typeorm/typeorm,gintsgints/typeorm