#13 center the confirm box

[gits]

Hi,

all the previous fixes seems to be right, thanks ;^)

could you center the confirmation box as well.

yet another request, could you memoize the last window position,
so, when it is restarted, the last window position is restored.

yet yet another request, coul you add an option to start minimized, or not.

thanks in advance.

regards.

[gits]

hi,

Forgive me about start minimized... forgot it's already there !

but the (next) Add Feed window should be centered to the main window as well.

thanks in advance.

regards

[linefinc]

Fix in 2020 version