3.1.0

---- Markdown - MINOR ----

    Added:
        jsonDecoder : Json.Decode.Decoder Markdown.Block.Block
        toJson : Markdown.Block.Block -> Json.Decode.Value


---- Markdown.Transmutationist - MINOR ----

    Added:
        blockDecoder : Json.Decode.Decoder Markdown.Block.Block
        blockType : Markdown.Block.Block -> String.String
        htmlDecoder : Json.Decode.Decoder Markdown.Inline.Html
        htmlToJson : Markdown.Inline.Html -> Json.Encode.Value
        htmlType : Markdown.Inline.Html -> String.String
        inlineDecoder : Json.Decode.Decoder Markdown.Inline.Inline
        inlineToJson : Markdown.Inline.Inline -> Json.Encode.Value
        inlineType : Markdown.Inline.Inline -> String.String
        toJson : Markdown.Block.Block -> Json.Encode.Value