                                 -*- text -*-

 - conversion from id3v2.2 makes XRVA frames in v2.4 tags!

 - in versions.c, make sure frames with empty data are handled robustly

 - global error message buffer

 - Separate reading and writing functions into different files for
   better library linking behavior. Specifically, separate out
   functions in nid3.c that aren't needed for just reading tags.

 - handle SEEK and LINK frames

 - handle compressed and encrypted frames
