Changes

Summary

1. Split popup opening from instantiation, allows reopening (details)

Commit 22b91c13012e3396481fe4211fac4e90d8652c36 by Jonas Split popup opening from instantiation, allows reopening
	src/main/java/de/johni0702/minecraft/gui/popup/AbstractGuiPopup.java
	src/main/java/de/johni0702/minecraft/gui/popup/GuiYesNoPopup.java