Move _VERSION field

errors.lua

@@ -2,6 +2,8 @@
 --
 -- Lua library for advanced error handling.
 
+local _VERSION = '0.5.5'
+
 local string_dist
 do
     local this_path = ... and (...):match('.+%.') or ''
@@ -133,7 +135,7 @@ end
 
 local ErrorHandler_mt = {__call = function (self, ...) internal_error(self, '', ...)  end}
 
-local errors = {}
+local errors = {_VERSION=_VERSION}
 
 function errors.new(module_name)
     assert(type(module_name) == 'string')

init.lua

@@ -1,5 +1,2 @@
-local _VERSION = '0.5.5'
-
 local errors = require (((...) ~= 'init' and (...) .. '.' or '') .. 'errors')
-errors._VERSION = _VERSION
 return errors