Version 2.0.0

Added proper support for parted GT6 save files.

Note:
Previously the parted files support was only for tmp_garage_stockyard.dat which is usually *.5 and *.6 files. For unmodified saves it's always like this because no other file exceeds the file size limit (0xFFFFF8). However if for example the garage is modified to allow 9999 cars and gets big enough, then tmp_garage_work.dat (*.3) might be parted to another file too. If stockyard hasn't been opened (no *.6 file is created), then the tmp_garage_work.dat will be split into *.3 and *.6. This is where the v1.*.* versions will fail because it was hardcoded to concatenate the *.6 to *.5 file.

Version 2.0.0 also no longer has anything but the *.0 hardcoded so it would no longer fail if someone were to change for example GT6_1.1 to be tmp_db_work.dat instead of tmp_save_work.dat (don't see why anyone would do this but anyways).