When scaling text, first round the scaling factor...

... to the nearest 2 decimal places. This fixes a bug where upon loading
a text item, it could be scaled by e.g 0.999999, which would eventually
round down the point size by 1pt. Making the text item shrink by 1pt
every time the document was opened.

src/domain/UBGraphicsTextItemDelegate.cpp

@@ -532,6 +532,9 @@ bool UBGraphicsTextItemDelegate::keyReleaseEvent(QKeyEvent *event)
 
 void UBGraphicsTextItemDelegate::ChangeTextSize(qreal factor, textChangeMode changeMode)
 {
+    // round it to the nearest hundredth
+    factor = floor(factor*100+0.5)/100.;
+
     if (scaleSize == changeMode)
     {
         if (1 == factor)