Added a file to handle writing a Plane to a CSV.
Added a file to handle large changes to a Plane.

Filters include a method to average raw values in the Plane to get
smoother terrain, a method to flip the plane across it's horizontal
plane and a method to "sample" th data in order to make the plane
smaller.
Fixed problems with error correction.

Problems arose from non-standardization of arguments to methods,
specifically supplying x and y for a Point incorrectly. Most changes
revolve around adapting methods for easy of use and clarity.
Reworked storing of maps to handle multiple maps.

Changed functions to take path of CSV's into account.