Particles - After some changes and workarounds, particles are now supported in 1.8.0 -> 1.12.2 instead of previously 1.11.2 - 1.12.2.
You do not have to make any changes to your setup. Just drag and drop the plugin jar to your plugins folder and /reload. If you run one of the previously unsupported versions for particles, make sure that the "arrow_enabled" setting is set to true in your config.yml if you wish to use particles.