Added ContextLocalRegister.
Added `ResolverManager.ignoreNullPointer`, default `false`.
Updated java_cup tools.
Show hints when occur syntax error
Updated ASM.
Update Lexer.
Updated test cases.
Renamed Template.reloadTemplateForce() to 'reload'
Updated WebEngineManager.appendProperties(..).
Added Loader.isEnableCache(String name), control if the template need to be cached.