Handle arrays where the item type is an object define inline.

[adeschamps]

Previously, the generated code would have a name conflict, such as:

struct Foo {
    // fields
}

type Foo = Vec<Foo>;

Now it'll append Item to objects that are defined inline:

struct FooItem {
    // fields
}

type Foo = Vec<FooItem>;

[adeschamps]

I was working on this at the same time as #14 - I think if you accept that PR, I can rebase this one and the tests will pass.

[adeschamps]

Rebased and passing now.

[Marwes]

Thanks, released as 0.4.4