'Fixed' downloads failing at point due to Excon shared connection and threads, added byte size formatter

lib/common.rb

@@ -0,0 +1,18 @@
+class W3DHub
+  def self.format_size(bytes)
+    case bytes
+    when 0..1023 # Bytes
+      "#{bytes} B"
+    when 1024..1_048_575 # KiloBytes
+      "#{format_size_number(bytes / 1024.0)} KB"
+    when 1_048_576..1_073_741_999 # MegaBytes
+      "#{format_size_number(bytes / 1_048_576.0)} MB"
+    else # GigaBytes
+      "#{format_size_number(bytes / 1_073_742_000.0)} GB"
+    end
+  end
+
+  def self.format_size_number(i)
+    format("%0.1f", i)
+  end
+end