Properly handle invalid ItemStacks when rendering PageIRecipes#96

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The-Fireplace wants to merge 3 commits intoTeamAmeriFrance:1.12from The-Fireplace-Minecraft-Mods:1.12-d

+21

Commits on Aug 21, 2017

Properly handle invalid ItemStacks when rendering PageIRecipes
The-Fireplace
committed

Commits on Aug 24, 2017

Should fix ConcurrentModificationException
The-Fireplace
committed

Commits on Sep 2, 2018

Use iterator in the list
The-Fireplace
committed