Bump version to 1.6
Bump version to 1.6

alignd/libPusher,hamchapman/libPusher,lukeredpath/libPusher,hamchapman/libPusher,andreaperizzato/libPusher,hamchapman/libPusher,LoyoChengdu/libPusher,alignd/libPusher,LoyoChengdu/libPusher,lukeredpath/libPusher,lukeredpath/libPusher,andreaperizzato/libPusher,LoyoChengdu/libPusher,LoyoChengdu/libPusher,alignd/libPusher,hamchapman/libPusher,alignd/libPusher,andreaperizzato/libPusher,lukeredpath/libPusher,andreaperizzato/libPusher