Fix dart-lang/markdown#156, same as dart-lang/markdown#164 (dart-lang/markdown#169)

Fix dart-lang/markdown#156, same as dart-lang/markdown#164

pkgs/markdown/CHANGELOG.md

diff --git a/pkgs/markdown/CHANGELOG.md b/pkgs/markdown/CHANGELOG.md
index 855a468..469c685 100644
--- a/pkgs/markdown/CHANGELOG.md
+++ b/pkgs/markdown/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## 0.11.4
 
 * Fix bug with lazy blockquote continuations (#162)
+* Fix bug with list item continuations (#156)
 
 ## 0.11.3
 

pkgs/markdown/lib/src/block_parser.dart

diff --git a/pkgs/markdown/lib/src/block_parser.dart b/pkgs/markdown/lib/src/block_parser.dart
index e7fc5e6..c6589d9 100644
--- a/pkgs/markdown/lib/src/block_parser.dart
+++ b/pkgs/markdown/lib/src/block_parser.dart
@@ -669,10 +669,7 @@
         }
 
         // Anything else is paragraph continuation text.
-        var continuedLine = childLines.last + parser.current;
-        childLines
-          ..removeLast()
-          ..add(continuedLine);
+        childLines.add(parser.current);
       }
       parser.advance();
     }

pkgs/markdown/test/original/unordered_lists.unit

diff --git a/pkgs/markdown/test/original/unordered_lists.unit b/pkgs/markdown/test/original/unordered_lists.unit
index 44ab70e..8c30026 100644
--- a/pkgs/markdown/test/original/unordered_lists.unit
+++ b/pkgs/markdown/test/original/unordered_lists.unit
@@ -78,12 +78,13 @@
 <ul><li>
 <p>one</p><ul><li>nested one</li><li>nested two</li></ul></li><li>
 <p>two</p></li></ul>
->>> list item turns what might be an h1 into nothing
+>>> list item allows lazy continuations
 - list
-===
+item
 
 <<<
-<ul><li>list===</li></ul>
+<ul><li>list
+item</li></ul>
 >>> list item turns what might be an h2 into nothing
 - list
 ---