1.0.0-alpha.15

• Added SetMediaType module to set the media type without changing the content.
• Changed the semantics of IDocument.ContentProvider so that it's never null.
• Added IContentProvider.Length to get the content length without needing to get the stream.
• Renamed AddMetadata to SetMetadata to better match other module naming conventions and to reflect the metadata key being set might already exist.
• Renamed ReplaceContent to SetContent to better match other module naming conventions.
• Removed the pre/post render flag from ProcessShortcodes and uses a default delimiter of <?# ... ?> (the forthcoming site generator will need to define the alternate delimiter for pre-transform shortcodes directly).
• Added overloads of methods that create content providers to set the media type.
• Updated all built-in modules to set the media type whenever appropriate.
• Added IContentProvider.MediaType to surface the media type of content.
• Added a MediaTypes static class that contains an exhaustive set of media type (MIME) mappings by file extension.
• Added a DeploySearchIndex module that deploys an Azure search index from input document metadata.
• Added a deploy command that executes deployment pipelines.
• Added a new ExecutionPolicy.Normal policy and changed ExecutionPolicy.Default to specify different behavior depending on if the pipeline is a deployment pipeline.