Updateable moved to sim.component package
Added StringUtil class
Removed Util class and moved its functions into Geo and StringUtil
Static function classes can no longer be instantiated.
Menubar: Added menu bar to main frame
Menubar: Added extra headings. 
Also added some comments
Moved pin classes into sim.component package.
Updated package references
SimUtil: Added encodeIntToPins()
Added FlipFlopD class
Merge branch 'SimulationDev'