Spawn Detector 1.2.0 for 1.12.r2

Spawn Detector 1.1.0 for 1.12

Spawn Detector 1.1.0 for 1.11.2

Spawn Detector 1.1.0 for 1.10.x

Spawn Detector 1.1.0 for 1.9.4

Spawn Detector 1.1.0 for 1.11