Use latest dev version of doctemplates.

cabal.project

@@ -4,6 +4,11 @@ package pandoc
   flags: +embed_data_files -trypandoc
   ghc-options: -j +RTS -A64m -RTS
 
+source-repository-package
+  type: git
+  location: https://github.com/jgm/doctemplates.git
+  tag: 7ccbf7df16edbc7c5d835d955b242c61fd4e6601
+
 -- source-repository-package
 --   type: git
 --   location: https://github.com/jgm/citeproc

stack.yaml

@@ -19,7 +19,7 @@ extra-deps:
 # - doctemplates-0.8.3
 - doctemplates:
   git: https://github.com/jgm/doctemplates.git
-  commit: 6cb8d09264f7c1f4b59ac67ff98b1a664a85e36a
+  commit: 7ccbf7df16edbc7c5d835d955b242c61fd4e6601
 - citeproc-0.2.0.1
 # - citeproc:
 #   git: https://github.com/jgm/citeproc.git