Commit 4570eb2bff2e1b71fa5b6408abbc69c98ff5ff24 Parent a71423f6ee1b77d9f79d42599ea00b4ca99f5da0 Author John MacFarlane <jgm@berkeley.edu> Date Sat, 22 Nov 2014 22:39:26 -0800 Revert "Remove distinction btw atx and setext header in AST." This reverts commit a71423f6ee1b77d9f79d42599ea00b4ca99f5da0. Not quite sure about this change, so reverting for now. Note that we still have a distinction between fenced and indented code blocks in the AST. These two distinctions seem to stand or fall together.