The patch node of the latest release are saying:
- [New] Plugin sourcefiles can be compiled "on the fly" and will be loaded directly from your project folder
- [New] Added command "reloadplugins" to reload plugins during runtime (also added permission)
I guess I'd like to see more information about that very useful feature. Otherwise you would have to compile your plugin, deploy it to the game, start the game, check if the plugin works, which can be a rather long cycle.
If - however - the dynamic class loading works, development will be easier.
(In the best possible scenario I'd love to attach the debugger to the running game and use breakpoints to step through things, which I understand might not be possible)
And to answer your question, a resource/plugin.yml is in place. Not sure what projectinfo.txt is though.
Thanks!