id3-charset-converter version 1.3

A new input parameter to convert file's last modified time within input days only

id3-charset-converter version 1.2

Support convert character set in mp3 with ID3 Tag version 1 and upgrade the tag to version 2.4

id3-charset-converter version 1.1

Support auto detect character set

id3-charset-converter version 1.0

v1.0

Update help message