   Weakened definition of the narrative typespec - it was being rigidly enforced for code cell properties and markdown cells would fail type checking.
   Weakened definition of the narrative typespec - it was being rigidly enforced for code cell
properties and markdown cells would fail type checking.

psnovichkov/narrative,aekazakov/narrative,nlharris/narrative,briehl/narrative,jmchandonia/narrative,kbase/narrative,rsutormin/narrative,jmchandonia/narrative,msneddon/narrative,pranjan77/narrative,kbase/narrative,msneddon/narrative,nlharris/narrative,mlhenderson/narrative,msneddon/narrative,msneddon/narrative,pranjan77/narrative,kbase/narrative,pranjan77/narrative,scanon/narrative,aekazakov/narrative,psnovichkov/narrative,jmchandonia/narrative,mlhenderson/narrative,psnovichkov/narrative,kbase/narrative,pranjan77/narrative,aekazakov/narrative,briehl/narrative,briehl/narrative,psnovichkov/narrative,briehl/narrative,aekazakov/narrative,scanon/narrative,briehl/narrative,briehl/narrative,mlhenderson/narrative,jmchandonia/narrative,pranjan77/narrative,aekazakov/narrative,jmchandonia/narrative,pranjan77/narrative,nlharris/narrative,scanon/narrative,msneddon/narrative,jmchandonia/narrative,rsutormin/narrative,rsutormin/narrative,rsutormin/narrative,psnovichkov/narrative,nlharris/narrative,psnovichkov/narrative,msneddon/narrative,rsutormin/narrative,rsutormin/narrative,nlharris/narrative,aekazakov/narrative,mlhenderson/narrative,scanon/narrative,nlharris/narrative,kbase/narrative,scanon/narrative,kbase/narrative,briehl/narrative,scanon/narrative,mlhenderson/narrative,nlharris/narrative,pranjan77/narrative,msneddon/narrative,jmchandonia/narrative,psnovichkov/narrative,mlhenderson/narrative