[1.10.2][1.10-1.3.9] Capturing Wand Can Kill Mob Contained

[Aedda]

If a Capturing Wand which contains a mob is right clicked on a block the mob will spawn on top of that block, inside any block on top of it causing it to suffocate. e.g. clicking the side of a wall with the wand will cause the mob to spawn inside that wall.

Expected behavior is that of vanilla spawn eggs with the mob being placed into the air block immediately next to the block clicked in relation to the side clicked. e.g. front clicked, mob spawns in front of the block; right clicked, mob spawns to right of block, etc.

References:
https://github.com/MinecraftModDevelopment/MMD-Dev-Server/issues/312
romelo333/notenoughwands#36