1.0
- initial release

1.1
- made IPS file optional. Default filename will be input filename.ips
  in the same location
- added extension detect. IPS extension isn't necessary anymore
- added EOF detection without "EOF"
- sped up the patch routine
- fixed bug in RLE that caused to read the next block incorrectly
- added subdir support

1.2
- added IPSv2 truncation

1.3
- fixed RLE >32K bug
- fixed datablock >32K bug
- fixed truncate >32K & >64K bug
- added some more error messages
- removed redundant code from the rename routine, causing to rename
  the result file incorrectly in MSX-DOS2