4.0.0

• FSharp.Data is now .NET Standard 2.0 only

Several other fixes:

• Fix CssSelect fails when there is no html tag
• Expose InnerResponse, Http properties
• Add DateTimeOffset for Csv Schema Inference
• Modified escaping of query string parameters
• Build fix: Remove dependency on http://europa.eu/rapid/conf/RSS20.xsd and update WorldBank to API to V2
• Remove dead links to tryfsharp.org
• HTML parsing for attributes not separated by a space
• Update JsonProvider.fsx
• Pluralizer - Add "slices" to special cases
• add ResolutionFolder=SOURCE_DIRECTORY to docs
• fix links in docs/tools/generate.fsx
• Revamp docs generation and move to .NET Standard 2.0 only