Bukkit

What steps will reproduce the problem?
1.
Put this in the config
    StunSpellTrait:
      duration: 2
      range: 10
      cost: 20
      cooldown: 5
      disableCooldownNotice: false
2.
3.

What is the expected output? What do you see instead?
It doesnt stun you (or it does but for a split second) and it says "You have been stunned for 0 seconds" No matter what i type

What version of RacesAndClasses are you using?
1.1.7
What version of Bukkit / what distribution are you using (Craftbukkit, Spigot, Cauldron, ...)?
Spigot 1.8.8
Do you have an error log of what happened?
Nope

Please provide any additional information below.

You are 100% correct. The duration is in Ticks instead of Seconds.
For shortterm fix, multiply duration * 20.
It will be shown wrong, but it will work correct.
Will be fixed in the next release.