Please read everything below in order to prevent unexpected issues.

This is a beta release! As such, please be sure to backup your server before installing. You also may wish to test thoroughly on a test server before using. Please report any issues you find.

Be sure to see the changelog for 2.8 if upgrading from an earlier version.

• Added new permissions spawner.change.<entity> and spawner.change.all to allow players to change spawners of specific types using the spawner command as well as spawn eggs. This is the spawner being changed. For example changing a rabbit spawner to a pig spawner will only be possible if you have either the spawner.change.all or spawner.change.rabbit permission.
• Added spawner.player permission which includes some default permissions that should be suitable for players:
  

  spawner.change.all: false
  spawner.eggs.all: false
  spawner.anvil.eggs: false
  spawner.anvil.spawners: false
  spawner.remove: false
  spawner.reload: false
  spawner.set.all: false
  spawner.give.all: false
  spawner.giveothers.all: false
  spawner.nosilk.all: false
  spawner.get: true
  spawner.break.all: true
  spawner.mine.all: true
  spawner.list: true
  spawner.help: true

• Only allowed to give 127 spawners or less to prevent NPE.
• Fixed fireworks spawners.
• Make frequency check lowercase config keys.
• Return proper entity names from NBT.

Known Issues

• Downgrading your server from 1.11 to 1.10 will result in various issues including no spawners working, disappearing, etc. (upgrading should work fine though).
• Config won't migrate automatically when you upgrade the server. Will be fixed in 3.0. 
• If a config value doesn't exist it will toggle between that value and all values in the config every time the plugin is reloaded. Pushed back. Will be fixed in 3.0.
• For additional issues please check here: https://github.com/ty2u/spawner/issues