Without this fix, collection attributes can never be set to nil when
coercion is enabled (because the coercer coerces nil to an empty array).
This should fix #334.
I originally suggested a change in a more central location, see this comment, but looking at the specs it seemed more appropriate to make this change only for collection attributes.
Without this fix, collection attributes can never be set to nil when coercion is enabled (because the coercer coerces nil to an empty array).
This should fix #334.
I originally suggested a change in a more central location, see this comment, but looking at the specs it seemed more appropriate to make this change only for collection attributes.