Changed to use SQLite for spawner location storage (you may go ahead and delete the configuration values in your config.yml named "playerSpawners" and "playerSpawnersChanged").
Fixed a bug where it would not properly disable pig spawning if the spawner was placed and not changed with an egg.
v3.0
Added a configuration option to disable spawner crafting
Added a configuration option to drop spawners on natural spawner destruction (to be able to get spawners if you disable spawner crafting)
Made spawners that are placed to not spawn anything (currently pigs) until an egg is actually placed into it
v2.2.3
Various optimizations
Disabled spawner block/egg drops in creative mode
Updated to 1.1-R4
v2.2.2
Added villager spawners (compatibility with villager egg drops from the BloodMoon plugin)
Added the configuration option to make eggs dropped from spawners be of the spawner's type. These eggs are NOT able to be crafted into other types of eggs.
v2.2.1
Fixed a bug where the spawner would not drop if the player had just placed the spawner.
v2.2
Made player-placed spawners drop the spawner block
Disabled player-placed spawners from dropping pig eggs when its type is initially changed
v2.1
Added permissions nodes to enable/disable specific eggs in survival or creative mode
v2.0
Disabled drops from player-placed spawners
Fixed a minor bug with changing spawner types
v1.4
Added permissions support
Changed a config value to be a permission
v1.3
Added the ability to disable a player from using the egg in survival as they would in creative (right-clicking on any block spawns that mob type)
v1.2
Added the ability to disable spawner drops in creative mode.
v1.1
Added the ability to set the range of experience gained (default 300 to 600)