• Added support for Google Ads API v16.1.
• Removed support for Google Ads API v14.
• Removed examples: approve_merchant_center_link, reject_merchant_center_link,
  remove_flights_feed_item_attribute_value, update_flights_feed_item_string_attribute_value,
  add_real_estate_feed, add_flights_feed.

• Added support for Google Ads API v16.0.
• Updated examples to remove references to extensions.
• Added support for a flag on the client that allows making requests
  without a developer token. This is in preparation for the pilot
  that uses Google Cloud orgs for API Access levels.
• Added local_services_lead.contact_details and
  local_services_lead_conversation.message_details.text to the fields
  to mask from logs.

Removed support for Google Ads API v13.

• Added support for Google Ads API v15.0.
• Renamed upload_conversion_with_identifiers to
  upload_enhanced_conversions_for_leads and upload_conversion_enhancement to
  upload_enhanced_conversions_for_web, and updated these examples.
• Renamed get_product_bidding_category_constant to
  get_product_category_constants and updated.
• Updated examples: upload_offline_conversion, add_customer_match_user_list,
  upload_call_conversion, upload_store_sales_transactions,
  add_merchant_center_dynamic_remarketing_campaign, add_performance_max_product_listing_group_tree, add_performance_max_retail_campaign, add_shopping_product_ad.

• Added support for Google Ads API v14.1.
• Removed support for Google Ads API v12.
• Removed add_keyword_plan code example.
• Added code examples: generate_forecast_metrics, generate_historical_metrics.

• Added support for Google Ads API v14.
• Removed examples: generate_forecast_metrics, generate_historical_metrics,
  get_campaign_criterion_bid_modifier_simulations.

• Added support for Google Ads API v13.1.
• Added code example: add_things_to_do_ad.
• Renamed hotel directory to travel.
• Updated examples: upload_conversion_enhancement, add_call_ad,
  add_smart_campaign, add_call, add_customer_match_user_list,
  upload_call_conversion, upload_conversion_enhancement,
  upload_store_sales_transactions.

• Removed support for Google Ads API v11.
• Added code example: add_performance_max_for_travel_goals_campaign.
• Updated code example: create_experiment.

• Fixed bug in v13 CampaignBudget object.

• Added support for Google Ads API v13.
• Removed support for Google Ads API v10.
• Reworked code examples to address the deprecation of combined rule user lists and expression rule user lists:
  • Edited SetUpAdvancedRemarketing and SetUpRemarketing
  • Renamed AddCombinedRuleUserList to AddFlexibleRuleUserList
  • Removed AddExpressionRuleUserList