Modify indents around comma to meet Xcode spec

[uk-ar]

I fixed indents around comma to meet Xcode(6.4) spec.

case statement

• expected result from Xcode

switch true {
case foo where bar,
|bar where baz:
 }

• actual:

switch true {
case foo where bar,
    |bar where baz:
 }

class statement

• expected result from Xcode

class Foo: Foo, Bar,
|Baz {
 }

• actual

class Foo: Foo, Bar,
    |Baz {
 }

[ap4y]

Hey @uk-ar can we this optional (something like this)? I personally prefer current formatting and I think some of the users asked for such indentation.

[uk-ar]

Hi @ap4y ! Thanks for early reply. I added an option(swift-indent-hanging-comma-offset) for this spec. And It's default value is similar to before. How about this?

[ap4y]

Thanks for the changes @uk-ar, looks awesome.