Merge remote-tracking branch 'lucas/ropes'

Conflicts:
	lib/standard/standard.nit

diff --cc lib/standard/standard.nit
index a0a4d6e,e329660..1ef4508
--- 1/lib/standard/standard.nit
--- 2/lib/standard/standard.nit
+++ b/lib/standard/standard.nit
@@@ -13,9 -13,9 +13,10 @@@
  
  # Standard classes and methods used by default by Nit programs and libraries.
  # This module is implicitly imported by every module.
 -package standard
 +module standard
  
 +import posix
+ import ropes
  import environ 
  import time
  import string_search