Various optimizations, Readme update, Bench script for imports

src/utility.jl

@@ -0,0 +1,9 @@
+function bytes_to_human_readable(bytes)
+    units = ["B", "KiB", "MiB", "GiB", "TiB"]
+    unit_index = 1
+    while bytes >= 1024 && unit_index < length(units)
+        bytes /= 1024
+        unit_index += 1
+    end
+    return string(round(bytes, digits=4), " ", units[unit_index])
+end