v0.2.0

v0.2.0 - Removal of subfile header lengths and offsets.
It was discovered that if the header length and offset sections
in the tgx subfile descriptor are not set to zero then some packed
files are incompatible with Kohan. This fixes that.

tgxpack.exe (windows)
sha1: 71b0ce2da7320fe64e7c4471699784f431591a3d
sha256: 06ce7e0f484b5309615f4a24fd81b954cf564d5007d6e61109c78092fa4db7a8
md5: b43d780bf90e757c4eef36c879f37b4e

tgxpack (linux)
sha1: 5c4ce6a9f0d71098236a4adeec91d84f917b6038
sha256: 56c21e2d8e231d2da86eba9c271ae9391ec9a139b1eea3c4f9c29d5d69b3c227
md5: d9c04b3ccb5b68c9ee24febe351cf385