v1.5.0: Merge pull request #3 from go-kid/refactor_registry

• refactor populate porperties flow
• refactor factory logic
• move registry to singleton registry
• add singleton component registry
• add definition registry
• refactor population rule/inject rule/scan policy to processors pattern
• support AOP
• add expression language processor, eg: tag: 'value:"#{1==1}"' to boolean true
• refactor errors with stack