Update the ChangeLog for 0.3.4.
Update the ChangeLog for 0.3.4.

postmodern/chruby,postmodern/chruby,regularfry/chruby,regularfry/chruby,ilikepi/chruby,eunomie/chgo,kbrock/chruby,ilikepi/chruby,kbrock/chruby,eunomie/chgo,ngpestelos/chruby,rstacruz/chruby-fish,JeanMertz/chruby-fish,ngpestelos/chruby,rstacruz/chruby-fish,JeanMertz/chruby-fish