refactor current control to save memory
M500 now saves all currents for all configured channels
Merge pull request #459 from wolfmanjm/refactor/digipot

refactor current control to save memory
cleanup include files
Merge pull request #460 from wolfmanjm/upstreamedge

cleanup include files
Merge remote-tracking branch 'upstream/edge' into edge
fix current control bug introduced by refactor
Merge pull request #462 from wolfmanjm/upstreamedge

fix current control bug introduced by refactor
Merge remote-tracking branch 'upstream/edge' into edge
update firmware.bin and checksum
Add a disable_msd to config to totally disable msd
Merge pull request #466 from wolfmanjm/add/disable-msd

Add a disable_msd to config to totally disable msd
added the msd_disable option to sample configs
Merge pull request #467 from wolfmanjm/upstreamedge

added the msd_disable option to sample configs
Merge remote-tracking branch 'upstream/edge' into edge