Write 0x82 instead of 0x00 in stlink2_wait_until_transfer_completes()
Fixed stlinkv2 writing (broken by #b754a32050)
Changed condition in stlink2_wait_until_transfer_completes()
fix issue3
stm8s105 etc has 128-bytes memory blocks instead 64-bytes on stm8s003
etc.
Added `flash_block_size` to device description
Merge pull request #4 from plumbum/issue3

Medium and High density devices (like STM8S105x) has 128-bytes flash blocks