With huge thanks 
to the sponsorship of @Hifihedgehog and the community of:
This has been brought back into compatibility and is no longer broken with 3.2.
NB: as per The Team and Sam, it is intended that the Reactions plugin will take on the additional features of this plugin (mainly the ability for multiple reactions) at some point in the future and hopefully (not yet confirmed) this will include provision of a migration tool.