adding untracked examples

backup before starting purse branch

added dynamic stamp, sqrt and sq methods

updates to undo

added comment syntax highlighting

added wave pattern example

commit before pull to local machine

commit before pull to local machine

added new examples and fixed origin issue for stamps. Added text highlighting when treeview is selected

added pen tool functionality

implemented line and curve graphical tools

implemented polygon graphic creation tool

added flatten method, can now clip multidimensional groups

implemented example menu, fixed group scaling, rotation and mirroring bugs

made updates to line mirroring methods, made mirroring recursive