VER: Release 0.36.0

[threecgreen]

Enhancements

• Added support for using built-in range syntax for specifying date and datetime ranges
  in the historical API, e.g. date!(2020-01-01)..=date!(2020-12-31)
• Changed metadata().get_dataset_range(), metadata().list_schemas(), and
  metadata().list_unit_prices() to accept any impl AsRef<str> as the dataset
  parameter
• Upgraded DBN version to 0.44.0:
  • Added logic to set code when upgrading version 1 SystemMsg to newer versions
  • Added Dataset::publishers() method to retrieve all Publisher values for a
    dataset

Breaking changes

• Updated the minimum supported tokio version to 1.41, which was released one year ago
• Made reference enums Country, Currency, and EventSubType non-exhaustive
• Removed variants from Country and Currency that were not present in any data
• Added more variants to EventSubType