0.21

version 0.21
* Support the APE metadata tag format.
* Exit with the correct exit code.

0.20

version 0.20
* Merge two lookup tables into one in the layer 2 CRC length code.
* Fix issues when deleting multiple files in MP3 Checker.
* Clean up code.
* Pump message queue in MP3 Checker so that the interface stays responsive
while scanning.
* Support file sizes larger than 4 GB.
* Show toolbar in MP3 Checker, even when compiling on newer version of
Windows and Visual Studio.