add new node, type
add expression and statement parser
remove unused visitor
update array class
add class decl and func decl
fix TypePool
bug fix grammar and add NodeVisitor
remove auto-generated file from code tree
add CalleeHandle
refactor TypePool
add typechecker, but need more work
add OperatorTable, annotation processor
several fix
add byte code generater
fix constructor call typing
work func call, but still buggy
func object apply
bug fix at statement end
bug fix and work for loop
remove old code