Wait 0.1s between the keydown and keyup event

I observed an issue where when autotyping into the Steam client the tab
key wouldn't register. Adding a 0.1s delay between the keydown and keyup
events seems to gives the application enough time to register the key
press.
Merge pull request #213 from jamesrhurst/autotype-delay

Wait 0.1s between the keydown and keyup event