I found out about a new Minecraft update by watching Major Nelson's "this week on xbox" and used the above link to check out the changelog - and there it is!
Finally, as of December 8th 2015, the update TU-31, which equates to 1.8, listed the following change:
Villagers have additional professions and trades, will now harvest crops if they are farmers, will only breed when willing and will turn into witches when struck by lightning.
About bloody time.