Support of M450 cycling computer

[chanezgr]

Hi,

First: thank you for your tool! It is so useful! Second, I can confirm here that the current version of v800_downloader work out of the box with the M450 bike computer I have for testing.

Great work, thanks!

Greg

[jokeen]

i also tested successfully on 450. The only issue appears to be that power data is not included in tcx output files.