v0.1.12: fix match not found when match includes last character
v0.1.11: fix match to text 1.2
v0.1.9: move demos to bin, to be dir compliant
v0.1.8: remove rubygems dependency in code.
v0.1.7: Fix in ambiguity management
v0.1.6: Fix ambiguity and cache support in CassiopeeMT
v0.1.5 : add CrawlerCache for basic cache management (previous result only), several fixes
v0.1.4 : fix 0.1.3 error on index load, add filter_position management in mt
v0.1.3 : 09/11 Olivier Sallou
 add CrawlerMT in cassiopee-mt for multi thread support to speed up the search
v0.1.2 : 09/11 Olivier Sallou
 add possibility to reload an "index" instead of using index method again
 fix comment mngt (comments attribute)
 add filter methods
 add to_pos method to display results per position
 add optimal methods
 add ambiguity support
v0.1.1 : fix #1, add filter option
  08/09/11 Olivier Sallou
v0.1.0 : First version
  Olivier Sallou
