Andreas Winter - 2016-04-30

It has been requested to revise the source-code so that modern compilers do not issue huge amounts of warnings.
I tried to do so I was able to reduce the warning to a minimum. On some system there are now 0 warning during compilation, some compilers on some systems are more cautious and report some warning, that I could not remove or that would be too complicated to remove.
So we should see a significant improvement concerning the warning, but 0 warning are hard to achieve.

QtGrace v0.2.6