v2.3.0

• Reflect API changes:
  • Now Transaction has attachments: List<Attachment> and labels: List<Label> fields - attachmentIds
    and labelIds are therefore now deprecated
  • A new getTransaction(id) API to get a single Transaction by id
• Add a bypassSslChecks option on HttpConfiguration (should never be used in production)
• Update all dependencies to their latest version
• Now the artifacts are hosted on Maven Central