def fill_changes(old_gem, updated_gem)
      changes[old_gem.name] = {
        versions: {
          old: old_gem.version.to_s, new: updated_gem.version.to_s
        },
        source: updated_gem.source
      }
    end
def fill_changes(old_gem, updated_gem)
      changes[old_gem.name] = {
        versions: {
          old: old_gem.version.to_s, new: updated_gem.version.to_s
        },
        source: updated_gem.source
      }
    end
Add changes to between two versions of a gem

 @param old_gem [Bundler::LazySpecification]
 @param new_gem [Bundler::LazySpecification]