Event modifier support

[danielmarbach]

Fixes #113

[danielmarbach]

@jnm2 Not exactly a beauty but it works and fixes the

public event 
```

problem on interfaces as well 

[danielmarbach]

Green now

[sungam3r]

Replacement magic back and forth :)

[danielmarbach]

OMG. I feel dirty now, really dirty

[jnm2]

@danielmarbach Sorry, I forgot about abstract override.

[jnm2]

@danielmarbach Sorry, I forgot about abstract override.

Wouldn't it be better to have a separate check for each keyword in order and append them as you go, so that you don't have to special-case every possible combination?

[danielmarbach]

Maybe but I'm done here #133