Don't emit unnecessary classes in HTML tables (#9376)

Pandoc used to emit a `header` class on the `tr` element that forms the table header. This is no longer needed, because `head > tr` will do the same thing.

Similarly, pandoc used to emit `even` and `odd` classes on `tr`s, allowing striped styling.  This is no longer needed, because one can use e.g. `tbody tr:nth-child(2n)`.

We now omit these classes, which have a good chance of conflicting with classes used for other things.

Closes #9325.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/command/9002.md b/test/command/9002.md
index 23915dda1..4a8e9baf9 100644
--- a/test/command/9002.md
+++ b/test/command/9002.md
@@ -8,7 +8,7 @@
 <col style="width: 50%" />
 </colgroup>
 <thead>
-<tr class="header">
+<tr>
 <th>a</th>
 <th>b</th>
 </tr>