Add native to-/fromJSArray
Make error message a bit better

When elm_dependencies.json is not found, give a bit more guidance.
resolve #538, correct error for appendable
point to elm-lang git repo
Merge pull request #602 from juhp/patch-1

point to elm-lang git repo
Add Array.to/fromJSArray tests
Array.to/fromJSArray to Native.Array
Fix parantheses
Move to [1..] instead of initialize
Merge branch 'pr/603'

Conflicts:
	tests/elm/Test/Array.elm
Fix silly type error with Array tests