add initial qanda list test; fix spacing between questions

CHANGELOG.adoc

@@ -5,6 +5,10 @@
 This document provides a high-level view of the changes to the {project-name} by release.
 For a detailed view of what has changed, refer to the {uri-repo}/commits/master[commit history] on GitHub.
 
+== Unreleased
+
+* Fix spacing between items in qanda list
+
 == 1.5.0.beta.4 (2019-09-04) - @mojavelinux
 
 * always use ; as delimiter to separate multiple font dirs to be compatible with JAR paths (#1250)

lib/asciidoctor-pdf/converter.rb

@@ -1322,7 +1322,7 @@ def convert_outline_list_item node, list, opts = {}
   def convert_content_for_list_item node, list_type, opts = {}
     if list_type == :dlist # qanda
       terms, desc = node
-      [*terms].each {|term| layout_prose %(<em>#{term.text}</em>), opts }
+      [*terms].each {|term| layout_prose %(<em>#{term.text}</em>), (opts.merge margin_top: 0, margin_bottom: @theme.description_list_term_spacing) }
       if desc
         layout_prose desc.text, opts if desc.text?
         convert_content_for_block desc

spec/list_spec.rb

@@ -403,6 +403,21 @@
     end
   end
 
+  context 'Q & A' do
+    it 'should layout Q & A list like a description list with questions in italic', integration: true do
+      to_file = to_pdf_file <<~'EOS', 'list-qanda.pdf'
+      [qanda]
+      What's the answer to the ultimate question?:: 42
+
+      Do you have an opinion?::
+      Would you like to share it?::
+      Yes and no.
+      EOS
+
+      (expect to_file).to visually_match 'list-qanda.pdf'
+    end
+  end
+
   context 'Callout' do
     it 'should use callout numbers as list markers and in referenced block' do
       pdf = to_pdf <<~'EOS', analyze: true