Merge pull request #14 from Silarn/master

3/15 Update 2
Merge pull request #15 from Silarn/master

3/16 Update
Removes speed increase from diagonal movement.
Moved LineRenderers to seperate object list.
Added option to view all current links.
Trimmed out previously commented, unused code.
Holding down LeftControl while creating a link will create the link in a new group.
"New" replaces "Add" - First checks for empty. Creates new if none found.
Error checking for placing obstacles and changing tiles
Merge pull request #20 from theUPquark/master

Lots of Things