Changed code to use PShape class
Deletion
Revert b3aedff..c69f13e

This rolls back to commit b3aedff0ee5f168b2b1119cd21c0d0323cbe8872.
Created separate class called TagCloud.

This class creates the Tag objects as well as other UI elements.
Final commit before branch merge

Mouse event handling code is written, but not currently being used.
Merge branch 'Shape-management'