• geoipupdate now sets the version in the User-Agent header to the
  version in the binary. While there were no issues with the version in the
  header, this makes sure it will match the binary. The header also now
  includes build information, such as OS and architecture.
• White spaces in secret files GEOIPUPDATE_ACCOUNT_ID_FILE,
  GEOIPUPDATE_LICENSE_KEY_FILE are ignored, see #262 issue.