v2.2.0

What's Changed

• update README.md by @kazumatsudo in #95
• update README.md by @kazumatsudo in #96
• Create CODE_OF_CONDUCT.md by @kazumatsudo in #97
• Create CONTRIBUTING.md by @kazumatsudo in #98
• Update issue templates by @kazumatsudo in #99
• add: pull_request_template.md by @kazumatsudo in #100
• Create SECURITY.md by @kazumatsudo in #101
• add: CODEOWNERS by @kazumatsudo in #102
• add: inVertex and outVertex label in edge table by @kazumatsudo in #104
• add seed data (java.util.UUID/java.util.Instant) by @kazumatsudo in #105
• add: all scenario test by @kazumatsudo in #106

Full Changelog: v2.1.0...v2.2.0