Fix list parsing & ensure line breaks inside lists are handled correctly

- Break list when kind of bullet changes
- Ensure we render multiline list items correctly

org/list.go

@@ -54,7 +54,7 @@ func (d *Document) parseList(i int, parentStop stopFn) (int, Node) {
 	start, lvl := i, d.tokens[i].lvl
 
 	list := List{Kind: listKind(d.tokens[i])}
-	for !parentStop(d, i) && d.tokens[i].lvl == lvl && isListToken(d.tokens[i]) {
+	for !parentStop(d, i) && d.tokens[i].lvl == lvl && isListToken(d.tokens[i]) && listKind(d.tokens[i]) == list.Kind {
 		consumed, node := d.parseListItem(i, parentStop)
 		i += consumed
 		list.Items = append(list.Items, node)

org/testdata/example.html

@@ -253,6 +253,38 @@ either <code>this</code> or <code>that</code> foo.
 either <code>this</code>
 or <code>that</code> foo.
 </p>
+<h3><a href="https://github.com/chaseadamsio/goorgeous/issues/50">#50</a>: Linebreaks in lists are preserved</h3>
+<ul>
+<li>
+<p>
+this list item
+has
+multiple
+linbreaks - but it&#39;s still just one paragraph (i.e. no line breaks are rendered)
+</p>
+</li>
+<li>
+<p>
+foobar
+</p>
+</li>
+</ul>
+<ol>
+<li>
+<p>
+same
+goes
+for
+ordered
+lists
+</p>
+</li>
+<li>
+<p>
+foo
+</p>
+</li>
+</ol>
 <h3><a href="https://github.com/chaseadamsio/goorgeous/issues/68">#68</a>: Quote block with inline markup</h3>
 <blockquote>
 <p>

org/testdata/example.org

@@ -120,6 +120,18 @@ crazy ain't it?
 either ~this~ or ~that~ foo.
 either ~this~
 or ~that~ foo.
+*** DONE [[https://github.com/chaseadamsio/goorgeous/issues/50][#50]]: Linebreaks in lists are preserved
+- this list item
+  has
+  multiple
+  linbreaks - but it's still just one paragraph (i.e. no line breaks are rendered)
+- foobar
+1. same
+   goes
+   for
+   ordered
+   lists
+2. foo
 *** DONE [[https://github.com/chaseadamsio/goorgeous/issues/68][#68]]: Quote block with inline markup
 #+BEGIN_QUOTE
 [[https://www.example.com][/this/ *is* _markup_!]]