Add Icon
Add About Dialog

Not only is the website available, but you can also ask the app for its
version. Still need to update it to list the currently loaded plugins as
well.
Plugin Information in about window
Added BuilderCache

Builder had a lot of static collections that would make life difficult
when reloading or opening a new file. The statics have been moved into a
cache object that is created at load time. The object is anemic right
now, but should gain methods and protection if its code continues to
change / grow.