Suppressing rake stacktrace when ant fails
Using conventional rake build filename
Polishing Seq interface
Adding Vec abstraction (int -> X mapping)
Cleaning in Seq/Vec api
Moving Vec#has() to IntSet
Add Set, Fun and IntFun abstraction,

and move the mapping function from Vec to IntFun
updating todo tasks
Ordered and Indexed abstraction (work-in-progress)
Experimentating with List api