lock down deps - refs #2401
lock down deps - refs #2401

staltz/tilestream,HydroLogic/tilestream,HydroLogic/tilestream,staltz/tilestream,frankrowe/tilestream,makinacorpus/tilestream,NolaMark/tilestream,mapbox/tilestream,makinacorpus/tilestream,mapbox/tilestream,simonpoole/tilestream,NolaMark/tilestream,frankrowe/tilestream,simonpoole/tilestream