Issue in StretchableLayoutManager with fix

[kunitoki]

This was an old bug that was never fixed despite Jules claiming it was.

Complex docking system

for your notice, i’ve had a look into it and i’ve come up with this solution. not the best approach but it is working, even if it could make your last component to have different size from what you would expect from the layout manager size you set it up (should be a negligible amount of pixels, usually < 10). to avoid the accuracy problem on the last component, i’ve just limited the placement on the first components only, then i treat the last component separately, making it to reach the remain…