I just thought that I would add that you can use markdown for strikethrough:
~~strikethrough~~
strikethrough
and simple tables with column alignment:
Rank | Level | Rating
--------|:------------:|-------:
_25k_ | Beginner | 997
5k | Intermediate | 1892
**2d** | Advanced | 2292
| Rank | Level | Rating |
|---|---|---|
| 25k | Beginner | 997 |
| 5k | Intermediate | 1892 |
| 2d | Advanced | 2292 |