Support Arrays as well as Strings.

[ignu]

I found that I needed this in order to use Array types with attribute_normalizer.

[dgilperez]

:+1:

[ignu]

Sorry about that, pushed a new commit.

[mdeering]

Great idea. Thanks.

[acurley]

Any idea when this pull request will be complete?

[mdeering]

What is your use case for this? Seems like something you could do easily by adding your own normalizer in an initializer. Wondering if this is a common enough use case to warrant inclusion.

[nikolai-b]

It would be useful for me :+1:

[nikolai-b]

I realised I didn't give a good use case, sorry.

Postgres allows me to save an array, normally I want to strip and downcase items before going into the array but for postcodes I want to upcase them. I could make a custom normalizer for array strip downcase and one for array strip upcase but it would be much nicer to use the existing normalizers.

[AlexEscalante]

I also would like this :+1:

[dmeremyanin]

I've just added arrays normalization to normalizr.