Add inline comments syntax

test/integration/inline_comment_test.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+class InlineCommentTest < Minitest::Test
+  include Liquid
+
+  def test_basic_usage
+    template_source = <<-END_TEMPLATE
+    foo{% # this is a comment %}bar
+    END_TEMPLATE
+    template        = Template.parse(template_source)
+    rendered        = template.render!
+    assert_equal("foobar", rendered.strip)
+  end
+end
+