Bogus "undefined assign `@streams`." warning

[arkadiy kraportov]

When I try to use LV Streams

{#for {id, d} <- @streams.items}

The undefined assign '@streams'. warning shows up.

[Slamet Kristanto]

Defining the streams as data solves the problem... I wish surface could generate it automatically

[Marlus Saraiva]

Fixed in 91ae6b3.