Newest rubygems

Add to the CHANGES

Security fix create_additons/JSON::GenericObject

Security fix create_additons/JSON::GenericObject

Security fix for create_additions problem 1.6.8

Security fix create_additons problem 1.5.5

Prepare new version

Prepare version 1.7.4

Prepare new 1.7.3 release

Prepare new version 1.7.2