refactor(packages): Realign markdown package with lunamark

packages/markdown/init.lua

@@ -121,7 +121,7 @@ local function lunamarkAST2SILE (options)
   writer.paragraph = simpleCommandWrapper("markdown:internal:paragraph")
   writer.code = simpleCommandWrapper("code")
   writer.emphasis = simpleCommandWrapper("em")
-  writer.strikethrough = simpleCommandWrapper("strikethrough")
+  writer.strikeout = simpleCommandWrapper("strikethrough")
   writer.subscript = simpleCommandWrapper("textsubscript")
   writer.superscript = simpleCommandWrapper("textsuperscript")
   writer.blockquote = simpleCommandWrapper("blockquote", "markdown:blockquote:fallback")
@@ -293,7 +293,7 @@ local function lunamarkAST2SILE (options)
   --   AST command structures in place of some ropes.
   --   Therefore, we now walk the AST and merge it, flattened to some degree.
 
-  function writer.merge (rope)
+  function writer.rope_to_output (rope)
     local function walk(node)
       local out
       local ropeType = type(node)
@@ -379,11 +379,18 @@ local function init (class, _)
       })
       local parse = reader.new(writer, {
         smart = true,
+        strikeout = true,
+        subscript=true,
+        superscript = true,
         definition_lists = true,
         notes = true,
         inline_notes = true,
         fenced_code_blocks = true,
-        pandoc_extensions = true,
+        fenced_code_attributes = true,
+        bracketed_spans = true,
+        fenced_divs = true,
+        raw_attribute = true,
+        link_attributes = true,
         startnum = true,
         fancy_lists = true,
         task_list = true,