New version of DAT decompressor

[Mindless]

lemmingsdatdecompressor_1_1_0.zip

changelog
 - open and save dialogs
 - more error checking
 - added a readme (ooo... )

no new functions, but I just thought i'd let you know i updated it
hopefully I haven't added any bugs

[JM]

This program comes in handy.

[Mindless]

lemmingsdatdecompressor_1_1_1.zip

changelog
 - data sections with incorrect checksums can now be saved
 - tiny error message bug fixed
 - smarter error checking
 - changed annoying default level naming