small optimizations & fixes

Changed: LibConError() in Print()
optimized: "Function Key" detection in getch()
added: a few keys to getch()
added: error-handling to pause()
small optimization: getFgColor()
removed: internal funtion "dec2shex()" for various reasons
update: printcolortable()
update: LibCon_Compiler: scripts, notes & binaries
update: Docs -> pause() return value