local CHANGELOG_PATH = '../CHANGELOG.md'
local ANNEXES_HEADER_LEVEL = 1

local shift_headings = {

  Header = function(header)
    header.level = header.level + ANNEXES_HEADER_LEVEL
    return header
  end
  
}

function Div (div)
  if div.classes:includes('changelog', 1) then
    local changelog = io.open(CHANGELOG_PATH):read('a')
    local changelog_doc = pandoc.read(changelog)
    local to_include = pandoc.walk_block(pandoc.Div(changelog_doc.blocks), shift_headings).content
    return to_include
  end
end