Update CHANGELOG.md for HydraFW v0.8 Beta release

Update CHANGELOG.md for HydraFW v0.7 Beta release

Merge pull request hydrabus#32 from Baldanos/master

Typo in my name

Version 0.5-beta with new USB VID_0x1d50/PID_0x60a7 using OpenMoko Hy…

…draFW

Fix sd cat output (now use cprint())

Some fixes & cleanup.

Add UART Hardware mode & I2C bit-banging mode.
Tested with success(with logic analyzer) SPI, UART & I2C.

Rebase submodule chibios & microrl to latest respective trunk

Added HydraFW version using git tag infos.

Added rules, ld and warnings fixed.