=make download progress safer (#316)

Author: oxinabox

src/download.jl

@@ -89,8 +89,8 @@ from the rules of the HTTP.
  - any additional keyword args (`kw...`) are passed on to the HTTP request.
 """
 function download(url::AbstractString, local_path=nothing, headers=Header[]; update_period=1, kw...)
-    format_progress(x) = "$(round(100x, digits=2))%"
-    format_bytes(x) = x==Inf ? "∞ B" : Base.format_bytes(x)
+    format_progress(x) = round(x, digits=4)
+    format_bytes(x) = !isfinite(x) ? "∞ B" : Base.format_bytes(x)
     format_seconds(x) = "$(round(x; digits=2)) s"
     format_bytes_per_second(x) = format_bytes(x) * "/s"