Simple Bukkit Calculator

-1.0 released

-1.1 roots added

-1.2 square roots added, now normal people can use the calculator instead of just ops

-1.3 cube roots added, squares and cubes also added

-1.4 absolute value added, parent permission calculator.* added, added a missing line in plugin.yml

-1.5 Fixed string input errors, and also changed some symbols to be more legible, rewrote code for improved performance