`bbcode` is now supported as an output format, as well as variants
`bbcode_fluxbb` (FluxBB), `bbcode_phpbb` (phpBB), `bbcode_steam` (Hubzilla),
`bbcode_hubzilla` (Hubzilla), and `bbcode_xenforo` (xenForo).
[API change]
Adds a new module Text.Pandoc.Writers.BBCode, exporting a number of functions.
Also exports `writeBBCode`, `writeBBCodeSteam`, `writeBBCodeFluxBB`,
`writeBBCodePhpBB`, `writeBBCodeHubzilla`, `writeBBCodeXenforo` from
Text.Pandoc.Writers.
reptee