update upstream changelog to go beyond the first page of entries

debian/changelog

@@ -2,6 +2,7 @@ tree-style-tab (0.15.2014120101-1) UNRELEASED; urgency=medium
 
   * New upstream release.
   * Update watch file.
+  * Update upstream changelog.
 
  -- Ximin Luo <infinity0@pwned.gg>  Wed, 17 Dec 2014 10:03:21 +0100
 

debian/rules

@@ -7,8 +7,8 @@ override_dh_auto_install:
 	install-xpi -x '*/*/license.txt' xul-ext-treestyletab.xpi
 
 override_dh_installchangelogs:
-	dh_installchangelogs debian/changelog.upstream
+	dh_installchangelogs debian/upstream/changelog.html debian/upstream/changelog
 
 .PHONY: get-orig-changelog
 get-orig-changelog:
-	amo-changelog tree-style-tab > debian/changelog.upstream
+	amo-changelog -p rst tree-style-tab