message: Print used pandoc version
diff: @@ -19,6 +19,8 @@ pdfimages := $(images_jpg) $(images_png) $(images_fig2pdf) $(images_fig2svg)
  PANDOC := pandoc
  PDMINVERSION := 2000000
  +PDVERSION := $(shell $(PANDOC) --version|head -n 1)
  +$(info Using $(PDVERSION))
  PDOK := $(shell expr `$(PANDOC) --version|head -n 1|cut -d' ' -f 2| sed -e 's/\.\([0-9][0-9]\)/\1/g' -e 's/\.\([0-9]\)/0\1/g' -e 's/^[0-9]\{3,4\}$$/&00/' -e 's/^[0-9]\{5,6\}$$/&00/'` \>= $(PDMINVERSION))
  ifneq "$(PDOK)" "1"
  $(error You need at least pandoc v2.0)
  