Update compat.lua

+isSummon
Add Vim files to .gitignore
Merge pull request #363 from Faith2531/patch-2

Update compat.lua
Merge pull request #366 from diath/ignore-update

Add Vim files to .gitignore
Remove unused functions
Umbral items
Merge pull request #369 from ninjahopparn/master

Umbral items
Fix mount name (Armoured War Horse)
Update demon.xml

I made small mistake. Now its perfect rl tibia demon.
Merge pull request #372 from LuisPro/patch-1

Update demon.xml
Merge pull request #371 from fsbcorrea/patch-1

Fix mount name (Armoured War Horse)
Fix PropWriteStream crash
Fix Game::checkCreatures crash