Some general libraries relocation to more robust package inside plugin. So in general, for you as regular user of plugin, this has no effect. For developers if some one used CMI library inside of it, will have to update their plugin appropriately.
Moved dryup listener to separate class which will prevent issue caused by NoClassDefFoundError in 1.12 and older versions. So this should solve issue appeared in 4.8.4.x version for older servers and preventing normal plugin load.