#' Tools to Mine 'Open Graph'-like Tags From 'HTML' Content
#'
#' Many services such as 'Facebook' and 'Twitter' rely on 'Open Graph'-like tags
#' (<http://ogp.me/>) to build a formalized knowledge graph from 'HTML' content metadata.
#' Tools are providfed to extract and analyze this data.
#'
#' @md
#' @name opengraph
#' @docType package
#' @author Bob Rudis (bob@@rud.is)
#' @import rvest xml2 stringi httr
#' @importFrom purrr map_df
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