(Work in progress)

Enemies won’t damage the player on every game update
Merge branch 'master' into player-immune-after-damaged

Conflicts:
	js/game.js
	js/player.js
Spiders use same damage logics as trolls

*Also changed invulnerability timer to 1 sec instead of 300 ms
Merge pull request #67 from MrMagnus/player-immune-after-damaged

Player immune after damaged