wea.inspect: pull metatable names from item.__name

this is completely arbitrary, but will assist in discovering types of 
tables etc.

worldeditadditions/utils/inspect.lua

@@ -1,5 +1,10 @@
 --- Serialises an arbitrary value to a string.
 -- Note that although the resulting table *looks* like valid Lua, it isn't.
+-- Completely arbitrarily, if a table (or it's associated metatable) has the
+-- key __name then it is conidered the name of the parent metatable. This can
+-- be useful for identifying custom table-based types.
+-- Should anyone come across a 'proper' way to obtain the name of a metatable
+-- in pure vanilla Lua, I will update this to follow that standard instead.
 -- @param	item		any		Input item to serialise.
 -- @param	sep			string	key value seperator
 -- @param	new_line	string	key value pair delimiter
@@ -12,7 +17,13 @@ local function inspect(item, maxdepth)
 	end
 	if maxdepth < 1 then return "[truncated]" end
 	
-	local result = { "{\n" }
+	local result = {  }
+	-- Consider our (arbitrarily decided) property __name to the type of this item
+	-- Remember that this implicitly checks the metatable so long as __index is set.
+	if type(item.__name) == "string" then
+		table.insert(result, "("..item.__name..") ")
+	end
+	table.insert(result, "{\n")
 	for key,value in pairs(item) do
 		local value_text = inspect(value, maxdepth - 1)
 			:gsub("\n", "\n\t")

worldeditadditions/utils/vector3.lua

@@ -2,6 +2,7 @@
 -- @class
 local Vector3 = {}
 Vector3.__index = Vector3
+Vector3.__name = "Vector3" -- A hack to allow identification in wea.inspect
 
 --- Creates a new Vector3 instance.
 -- @param x		number	The x co-ordinate value.