Added Log class, maybe we can set the STACK_DEPH and the DOT_CLASS configurabl
added new line at end of file (I'm afraid of checkstyles)
Allow the log tag to be changed without using enable

Added other log levels and errors
Merge pull request #8 from novoda/add_log_class

Added Log class, maybe we can set the STACK_DEPH and the DOT_CLASS configurable