0.28.0

Release notes

Enhancements

• Added operating system info to the user agent to aid troubleshooting
• Standardized client info sent by live clients to match historical
• Added methods to the client builders to extend the user agents with a custom string

Deprecations

• Deprecated Historical::with_url(): use the builder to override the base URL
• Deprecated the upgrade_policy parameters for timseries().get_range() and
  timeseries().get_range_to_file(): use the Historical client parameter
  instead