Update readme for new formats

Author: SamboyCoding

README.md

@@ -54,23 +54,25 @@ string? extension = bank.Header.AudioType.FileExtension();
 
 Alternatively, you can consult the table below:
 
-| Format | Supported? | Extension | Notes |
-| :-----: | :--------------: | :---------: | :----------: |
-| PCM8 | ✔️ | wav | |
-| PCM16 | ✔️ | wav | |
-| PCM24 | ❌ | | No games have ever been observed in the wild using this format. |
-| PCM32 | ✔️ | wav | Supported in theory. No games have ever been observed in the wild using this format. |
-| PCMFLOAT | ❌ | | Seen in at least one JRPG. |
-| GCADPCM | ✔️ | wav | Tested with single-channel files. Not tested with stereo, but should work in theory. Seen in Unity games. |
-| IMAADPCM | ✔️ | wav | Seen in Unity games. |
-| VAG | ❌ | | No games have ever been observed in the wild using this format. |
-| HEVAG | ❌ | | Very rarely used - only example I know of is a game for the PS Vita. |
-| XMA | ❌ | | Mostly used on Xbox 360. |
-| MPEG | ❌ | | Used in some older games. |
-| CELT | ❌ | | Used in some older indie games. |
-| AT9 | ❌ | | Native format for PlayStation Audio, including in Unity games. | 
-| XWMA | ❌ | | No games have ever been observed in the wild using this format. |
-| VORBIS | ✔️ | ogg | Very commonly used in Unity games. |
+|  Format  | Supported? | Extension |                                                   Notes                                                   |
+|:--------:|:----------:|:---------:|:---------------------------------------------------------------------------------------------------------:|
+|   PCM8   |     ✔️     |    wav    |                                                                                                           |
+|  PCM16   |     ✔️     |    wav    |                                                                                                           |
+|  PCM24   |     ❌      |           |                      No games have ever been observed in the wild using this format.                      |
+|  PCM32   |     ✔️     |    wav    |           Supported in theory. No games have ever been observed in the wild using this format.            |
+| PCMFLOAT |     ❌      |           |                                        Seen in at least one JRPG.                                         |
+| GCADPCM  |     ✔️     |    wav    | Tested with single-channel files. Not tested with stereo, but should work in theory. Seen in Unity games. |
+| IMAADPCM |     ✔️     |    wav    |                                           Seen in Unity games.                                            |
+|   VAG    |     ❌      |           |                      No games have ever been observed in the wild using this format.                      |
+|  HEVAG   |     ❌      |           |                   Very rarely used - only example I know of is a game for the PS Vita.                    |
+|   XMA    |     ❌      |           |                                         Mostly used on Xbox 360.                                          |
+|   MPEG   |     ❌      |           |                                         Used in some older games.                                         |
+|   CELT   |     ❌      |           |                                      Used in some older indie games.                                      |
+|   AT9    |     ❌      |           |                      Native format for PlayStation Audio, including in Unity games.                       | 
+|   XWMA   |     ❌      |           |                      No games have ever been observed in the wild using this format.                      |
+|  VORBIS  |     ✔️     |    ogg    |                                    Very commonly used in Unity games.                                     | 
+|  FADPCM  |     ✔️     |    wav    |                                 Seems to be used in Unreal Engine games.                                  |
+|   OPUS   |     ❌      |           |                                                     ?                                                     |
 
 # Acknowledgements