Clean Code (refractor move --> interfaces)

[thelittlefireman]

Cleaning code

By @thelittlefirman

[entropitor]

I'm not sure if I like this change because it will break all clients using our library (as they need to implement "other interfaces", they'll need to change their import statements)

@alamkanak what do you think?

[marunjar]

@thelittlefireman also this PR isn't complete, i'm missing an interfaces folder

[thelittlefireman]

sorry, it's fix now ;)

[thelittlefireman]

Conflicts Fixes

[thelittlefireman]

again

[entropitor]

@alamkanak Is this something we want to do? We'll break all current clients with this code. (We have 1534 stars on github so that might be a lot of clients that we're breaking).

[thelittlefireman]

It's just the java convention code ... we cannot put all the code in only one Class, it's a mess ...
And it's just a the imports to change (simple Ctrl+Maj+O to do).
I can readd old interfaces in WeekView Class with deprecated tag if you prefer?

[entropitor]

We could have interfaces in the WeekView class that inherit from the real interfaces. + @deprecated tag. That way I can live with this change.

Can you also update the documentation then?

[thelittlefireman]

Done :) is that okay right now ?