v3.2.1

• update node version 917c931
• Merge remote-tracking branch 'origin/master' c8d7bb2
• Merge pull request #76 from ryokkkke/update-recursive-copy 1eeda21
• update recursive-copy 0599682
• Update packages 15ba239
• Update README.md 5c929c8

v3.2.0...v3.2.1