Breaking changes:

Removed port setting (fixes #9)
Throw errors when weird/faulty matrix url (work on #10)
Added neturl for url parsing

debug.lua

@@ -0,0 +1,42 @@
+function eprintf(fmt, ...)
+  minetest.log("info", fmt:format(...))
+end
+
+
+function table_print (tt, indent, done)
+  done = done or {}
+  indent = indent or 0
+  if type(tt) == "table" then
+    local sb = {}
+    for key, value in pairs (tt) do
+      table.insert(sb, string.rep (" ", indent)) -- indent it
+      if type (value) == "table" and not done [value] then
+        done [value] = true
+        table.insert(sb, "{\n");
+        table.insert(sb, table_print (value, indent + 2, done))
+        table.insert(sb, string.rep (" ", indent)) -- indent it
+        table.insert(sb, "}\n");
+      elseif "number" == type(key) then
+        table.insert(sb, string.format("\"%s\"\n", tostring(value)))
+      else
+        table.insert(sb, string.format(
+            "%s = \"%s\"\n", tostring (key), tostring(value)))
+       end
+    end
+    return table.concat(sb)
+  else
+    return tt .. "\n"
+  end
+end
+
+function to_string( tbl )
+    if  "nil"       == type( tbl ) then
+        return tostring(nil)
+    elseif  "table" == type( tbl ) then
+        return table_print(tbl)
+    elseif  "string" == type( tbl ) then
+        return tbl
+    else
+        return tostring(tbl)
+    end
+end