2010.10.10
ds2sdk 0.12beta
fixed serval bugs on file system
fixed the bug in ds2_getrawInput function
using float point algorithm to improve accuracy of timer
added ds2io_initb

2010.8.6
ds2sdk 0.11beta
fixed bug of ds2_init() function in libds2b.a

2010.7.23
ds2sdk 0.1beta
the original beta version
this version do not employ any OS
