Fix unsafe operations

• Fix some unsafe operations in Seq
• Add a method to get a LikedList from Seq
• Add a method to get a ArrayList from Seq
• Add a take method to get the first N elements
• Add a drop method to remove the first N elements

Minor fix on array size

0.2.1.0

Travis fix

Fix build

0.2

Structure fix, rename from jMonad to Seq