Add support of footer

[n10v]

To speed up the process of locating an ID3v2 tag when searching from the end of a file, a footer can be added to the tag. It is REQUIRED to add a footer to an appended tag, i.e. a tag located after all audio data. The footer is a copy of the header, but with a different identifier.

http://id3.org/id3v2.4.0-structure

[n10v]

Click 👍 if you need support of this feature. Click 👎 - if not.