Bug: Formatter removes newline inside parentheses for generic type arguments

[zw963]

NamedTuple(
  started: Array(Instance::Config),
  stopped: Array(Instance::Config)
).from_json(reply)

will always be format into:

NamedTuple(
  started: Array(Instance::Config),
  stopped: Array(Instance::Config)).from_json(reply)

[zw963]

The same issue happen on following code too.

Following code too longer for my screen

getter readers : Hash(IO::FileDescriptor, Instance) = {} of IO::FileDescriptor => Instance

I want to split it like this:

getter readers : Hash(IO::FileDescriptor, Instance) =
      {} of IO::FileDescriptor => Instance

But, it always revert to one-line version.