* Update to ImageSharp 2.1.0 and ImageSharp.Web 2.0.0-alpha.0.23
* Rename CachedNameLength to CacheHashLength and add CacheFolderDepth setting
* Replace PhysicalFileSystemProvider with WebRootImageProvider
* Support EXIF-orientation in image dimention extractor
* Remove virtual methods on FileProviderImageProvider
* Simplify FileInfoImageResolver
* Update to SixLabors.ImageSharp.Web 2.0.0-alpha.0.25 and remove custom providers
* Make CropWebProcessor EXIF orientation-aware
* Improve width/height sanitization
* Also use 'v' as cache buster value
* Add WebP to supported image file types
* Update to SixLabors.ImageSharp.Web 2.0.0-alpha.0.27 and fix test
* Fix rounding error and add test cases
* Update to newest and stable releases
* Move ImageSharpImageUrlGenerator to Umbraco.Web.Common
* Use IConfigureOptions to configure ImageSharp options
* Implement IEquatable on ImageUrlGenerationOptions classes
* Fix empty/null values in image URL generation and corresponding tests
* Use IsSupportedImageFormat extension method
* Remove unneeded reflection
* Rename Umbraco.Core namespace to Umbraco.Cms.Core
* Move extension methods in core project to Umbraco.Extensions
* Move extension methods in core project to Umbraco.Extensions
* Rename Umbraco.Examine namespace to Umbraco.Cms.Examine
* Move examine extensions to Umbraco.Extensions namespace
* Reflect changed namespaces in Builder and fix unit tests
* Adjust namespace in Umbraco.ModelsBuilder.Embedded
* Adjust namespace in Umbraco.Persistence.SqlCe
* Adjust namespace in Umbraco.PublishedCache.NuCache
* Align namespaces in Umbraco.Web.BackOffice
* Align namespaces in Umbraco.Web.Common
* Ensure that SqlCeSupport is still enabled after changing the namespace
* Align namespaces in Umbraco.Web.Website
* Align namespaces in Umbraco.Web.UI.NetCore
* Align namespaces in Umbraco.Tests.Common
* Align namespaces in Umbraco.Tests.UnitTests
* Align namespaces in Umbraco.Tests.Integration
* Fix errors caused by changed namespaces
* Fix integration tests
* Undo the Umbraco.Examine.Lucene namespace change
This breaks integration tests on linux, since the namespace wont exists there because it's only used on windows.
* Fix merge
* Fix Merge