Merge branch 'hotfix/update_gem_to_0.2.20'

* hotfix/update_gem_to_0.2.20:
  update gem
update gem
add deutsch
update gem
Merge branch 'hotfix/update_gem_to_0.3.0' into develop

* hotfix/update_gem_to_0.3.0:
  update gem
  add deutsch
  update gem