Merge pull request #3891 from CliMA/tr/itime-support

Fix dt check in cb for ITime

Author: imreddyTeja

src/callbacks/callback_helpers.jl

@@ -31,7 +31,7 @@ end
 
 function call_every_dt(f!, dt; skip_first = false, call_at_end = false)
     cb! = AtmosCallback(f!, EveryΔt(dt))
-    @assert dt ≠ Inf "Adding callback that never gets called!"
+    @assert float(dt) ≠ Inf "Adding callback that never gets called!"
     next_t = Ref{typeof(dt)}()
     affect! = function (integrator)
         cb!(integrator)