15.0.0-rc1

New features:

• Support for the /languages endpoint (#256)
• Better support for more IDeliveryClients in a single project see the docs (#240, #254)
• Added workflow step codenames to content items (#266)
• URL generation for the Delivery endpoint was made public in Kentico.Kontent.Urls package

Fixed bugs:

• Issue in GetOriginatingAssembly function inside HttpRequestHeadersExtensions (#264)
• Error deserializing rich text content when using distributed caching (#265)

Other changes:

• SDK tracking header moved to HttpClient.DefaultRequestHeaders (#248)
• Bumped versions of Microsoft.Extensions.* dependencies to 3.1.2

Breaking changes:

• When an item, type, or taxonomy is not found we do not throw an exception anymore, instead, IApiResponse has properties IsSuccess and Error that contain information about what went wrong. (#255, #251)
• Implicit operator removed from class DeliveryItemResponse - this syntax sugar can't be used anymore, please use the .Item property of the DeliveryItemResponse
• removed Blocks property from IRichTextContent - use the IEnumerable aspect of IRichTextContent itself (in other words, just remove .Blocks from your code)
• Project ID is no longer part of *EndpointUrl properties - this is an internal change that should have no impact on code used by customers (#246)
• The package Kentico.Kontent.ImageTransformation was renamed to Kentico.Kontent.Urls - there shouldn't be any breaking changes within the package