WebDevStudios/Custom-Metaboxes-and-Fields-for-WordPress — pull request #651 by mweimerskirch (2014-08-14 08:42:57+00:00)
Title: Fixed regression with "multicheck" fields

In previous versions, multicheck fields were stored using multiple key/value entries. This was recently changed (maybe due to a bug) so now those fields got saved as serialized arrays. Unfortunately, that change made it impossible to use the "meta_key" and "meta_value" arguments with the get_posts function.
This patch restores the previous behaviour.